Fasting Cures Type 2 Diabetes – T2D 4

While many consider Type 2 Diabetes (T2D) irreversible, fasting has also been long known to cure diabetes. In our previous post, we considered bariatric surgery. While extreme, these surgeries have proven the point that the metabolic abnormalities that underlie T2D (hyper insulinemia, insulin resistance) can often be fully reversed after a short (weeks) period of intensive treatment with bariatrics. Many early studies were done with the heavy-duty Roux-en-Y surgery, which is the heavyweight champions of surgeries. The best weight loss. The most complications. This is the surgery that has ‘Go Big or Go Home’ tattooed on its massive bicep.SurgeryCuresDiabetes5

But even milder forms of bariatric surgery show the same reversibility of T2D. A gastric band is essentially a belt implanted around your stomach.

They keep tightening the belt so that you can’t eat. If you try to eat too much, you’ll puke it all back up. Loverly. It ain’t pretty, but it sure do work. Again, long term results are kind of iffy, but short term results are pretty good.

You can see the results of gastric banding versus medical treatment from the graph above. Patients randomized to the gastric band showed a significant and pretty damn good drop in their fasting blood sugars. In other words, T2D was reversing in a b-i-g way. Those given medicines alone didn’t do very well at all. Basically they stayed the same. They were no better than before.

So, yes, even gastric banding these 500 pound patients with 20 years of diabesity can reverse within weeks even before the weight comes off. One of the main questions is why? There are many hypotheses – which we will consider in a later post, but it is the sudden severe restriction of all calories that causes this beneficial effect. This is the same thing as the time tested, ancient healing tradition of fasting. Fasting is the voluntary restriction of food for religious, health or other purposes (eg. hunger strikes). Is bariatrics simply a surgically enforced fast? The short answer is yes.FastingCuresDiabetes1

The diabetes ‘specialists’ all consider T2D to be a chronic and progressive disease. However, both bariatrics and fasting proves them wrong. Consider this real life example from my practice. A lady in her mid 60’s was referred to me on 120 units of insulin daily along with 2 grams/day of metformin (a type of medication used for T2D). She had T2D for 27 years and had been progressively using higher and higher doses of insulin in an effort to control her blood sugars. However, things were getting worse. So that’s why she was referred to us in the Intensive Dietary Management Program.

We started her on a regimen that included fasting under strict medical supervision. We started with a full week of fasting and immediately reduced her medications. When she was feeling well, she continued for a second week, then a third. By that time she was off her insulin. It’s been over a year now, and she continues to be off all insulin and medications with a HgbA1C of 5.9%. Technically, she is no longer diabetic (defined by an A1C of less than 6%).FastingCuresDiabetes2

She feels terrific – with more energy now than she has had for over a decade. Her husband was so impressed that he also started our program and has recently come off all his insulin, too.

But wait! The diabetes ‘experts’ insist that T2D was a chronic and progressive disease! How can this lady, with her 27 year history of T2D, suddenly reverse all her disease and become non-diabetic? How can this possibly happen?

The answer is quite simple. Logically, there was simply no truth to the statement that T2D is chronic and progressive. It was only a lie. The ‘experts’ were being economical with the truth. Spinning a yarn. Pulling a ‘Bill Clinton’.

But the fact that fasting cures diabetes has been know for close to 100 years! One of the most famous diabetologists in the history of the world – Dr. Elliot Joslin wrote about it in the Canadian Medical Association Journal in 1916! In fact, he thought that it was so obvious that fasting was helpful that studies would not even be necessary. This, from the guy that Harvard University used to name its world famous Joslin Center for Diabetes.

What happened? Well, remember that there was still massive confusion about Type 1 and Type 2 diabetes back then. Fasting would not be particularly useful for Type 1, and type 2 was still quite unusual back then. After the discovery of insulin in the early 1920’s, all the focus turned to it as the ‘cure’ for diabetes. While it was a major advance for type 1, it was not quite the panacea for type 2s. However, most of the interest in fasting disappeared as doctors focused on what would be their mantra for the next century – drugs, drugs, drugs.FastingCuresDiabetes3

The effect of wartime starvation on T2D was also obvious. During both world wars, the mortality from diabetes dropped precipitously. In the interwar period, as people went back to their accustomed eating habits, it went back up. This, of course is quite easy to understand. Since T2D is essentially a disease of excessive sugar in the body, reducing intake of sugars and carbohydrates should cause less disease.

Returning to the point that bariatrics is simply a surgically enforced fast, you can directly compare the effects of fasting and bariatrics. In a fascinating study, patients who were waiting to undergo bariatric procedures were given a period of fasting beforehand. The reasoning was quite simple. Many of these morbidly obese patients had enormous fatty livers. If you could somehow reduce this fatty liver and reduce their weight somewhat, the risk of surgical complications would be reduced.

The reduction in liver size would make working in the abdominal cavity much easier, with better vision. Since many of these procedures are done laparascopically, being able to see better is a huge benefit. Also, with less abdominal distention, abdominal wound healing was significantly improved. Therefore, it was decided to try a period of fasting for these patients before getting their actual surgery.

In the meantime, you could compare both sugar control and weight loss during the fasting period and also during the post surgical period. Since bariatrics is considered the heavy weight champ, this was a real David vs Goliath battle (Fasting vs Surgery).

On the graph below, you can see the results. In the first graph, fasting caused 7.3 kg weight loss compared to only 4kg for surgery. The second graph shows the overall ‘glycemia’ or the total amount of sugar in the blood over the day. During fasting, there was far less sugar in the blood (1293 vs 1478). On both counts you can see that the fasting was actually significantly better than the surgery! Blood sugars came down faster, as did weight. David (fasting) did not simply beat Goliath (bariatrics), he beat him like a rented mule.FastingCuresDiabetes4

If all the benefits of bariatric surgery accrue because of fasting, why not simply do the fasting and skip the surgery? The standard answer is that people cannot do the fasting without the surgical enforcement. But have they ever tried? How do you know that you cannot fast for an extended period of time if you have never tried it? Shouldn’t you at least give it a shot before giving up?

But my main point is again, not to criticize or praise surgery. Rather my point is this. Fasting cures diabetes. Rather than the chronic and progressive disease that we have been promised, instead T2D turns out to be a treatable and reversible condition. Both practices of fasting and bariatric surgery prove the point. This is a curable disease. Type 2 diabetes is entirely reversible. This changes everything. A New Hope arises.

Start here with My Journey

Continue to T2D part 5 “Treatments that Cure

See lecture “The Two Big Lies of Type 2 Diabetes

95 Responses

  1. Even though there is plenty of good information on fasting (but most folks dont read research) the propensity, not only in the medical community but also from a patient’s perspective, is to keep on following the same extremely inefficient procedures/approaches. I hope that as more knowledgeable patients get good results with non-drug approaches, our message will push through. Keep up the good work Dr. Fung! 😉

    • My mother has type 2 diabetes and still drinks coke, eats cookies, and I’m so worried about her getting worse! Fasting is an interesting approach and based on the findings in this article I think one that i should recommend for her to try.

      I found this site and it looks interesting but I wonder if the “secret sauce” is just “fasting”… I’d really like to find a non-drug approach to this, as you say. but also don’t want to get taken for a ride. Do you have any thoughts on if this is legit or not?

  2. Desmond Govender

    Well I can testify to the fact that fasting is the way to go if you want to reverse T2D. I started intermittent fasting about 7 weeks ago. Because of work I am not able to fast for longer than 36 hours. I use to be on 60 units of insulin a day but now I am on 20 units per day. I can see the results of fasting and coupled with a low carb diet. I plan to attempt a longer fast once I am able to do so ( no traveling) and hope to reverse my T2D completely. Thanks Dr Fung !

    • Thanks for your comment. I have just started a similar fast schedule. Curious, can you share your basic diet plan on the non-fasting days? I am finding that after the third 36 hour fast I was getting run down and very tired. I suspect I am not doing something right during the intervening 2-3 days. Thanks

    • I’m T2 I’ve been intermittent fasting 24 hrs 3 days 5 months and have lost 25 lb, feel much better but frustrated because I can not reduce my food day insulin, its apparent that I have not yet cured my diabetes. Yes I take less insulin, my ration was 1 unit to 4 carbs and it appears recently to be taking more insulin to handle what carbs I eat. I am already on a low carb diet I enjoy. Recently my BG is high on fasting days. Should I do a longer fasting and go off insulin for those fasts?

      • Hi Donay, I’ve found that it is important to not “technically” eat a low carb diet. What I mean is eat plenty of whole beans, whole grains like Hulless Barley, cracked wheat as large and course as you can find it, Bulgur wheat, Oat groats or steel cut oats nuts and most fruit. Rice seems to not have enough fiber so I don’t eat it. Remember, excess fat in the form of saturated fat from animal meat and yes even coconut oil can increase insulin resistance. It has been proven in studies. When folks say eat more whole grain and they mention whole grain breads and cereals which are crispy powdered grain like flour, they do not know what they are talking about and should not be listened to anymore. Then some paleo folks have the stupidity to say that grains cause problems like, well, diabetes. Nobody can be that stupid and I figure they are intentionally trying to hurt people and get rich off of it. They know perfectly well that real, whole beans and real, whole grains are a totally different animal than powders and flours but they throw them into the poison index anyway. They contain compounds that steady blood glucose and reduce insulin resistance and they must be eaten. Folks that eat the most WHOLE grains and WHOLE beans have the least incidence of Type @ diabetes. Studies prove this. Throw a little granulated bouillon in there and they do taste great and are filling. I like Campbell’s bean with bacon soup with a cup of those cooked whole grains and add a little more chicken bouillon and it’s great. That little bit of fat and that little bit of bacon is more than made up for in the huge amount of grains and fiber. I’ll eat 1/2 to 3/4 cup of that mixture almost every day. Eliminate all meat but do eat fatty fish like sardines 2 or 3 times per week. No dairy except for Kefir or yogurt or cheese. Lactose in milke is broken into 2 sugars of which Galactose is said to give health problems. Lactose free milk actually has more bio available Galactose than regular milk and is worse. Bacteria in Kefir yogurt and cheese eat lactose so they have very little lactose or glalactose for that matter and is ok. The cheese is ok in limited amounts but because of its high fat content, too much of that will also make you insulin resistant.

    • Ahmad Luqman Alias Firdaus Bin Ab Patah

      How you progress?

  3. Jimmy Moore sent me over. I thoroughly enjoyed the Periscope you two did.

    I just wanted to say that it’s been said (and written) that to diabetics, food is a poison, so why keep poisoning yourself? A fast is the ultimate detox, and can be thought of as cleaning out the poisons that food leaves behind (like sugar, GMOs, pesticides, artificial ingredients, etc.). It also cleans out the junk that has already accumulated and the body is slow to remove itself (cellular debris, etc.).

    Jimmy’s fasting project has inspired me (and Hubby) to join him and try a fast of our own. We’ve never fasted before, but go at least 12 hrs. between meals, so I figured we could do 24 hrs. We ran into a couple of minor problems that we now know how to fix, and plan on trying the 24 hr. fast again (then going for 48 hrs. once we get good at handling 24). The goal here is to be able to go a week, since Hubby has both Thanksgiving week and Christmas week off, and he’ll be home where I can tend to his fasting needs (water, salt, etc.), and NO WORK STRESS TO DERAIL HIM!

    We eat keto, but ARE we keto? We’re not there yet–still trying to get blood sugar under control. Keto should come when blood sugar gets back into normal and low range. Fasting is the last stop for us, as we’ve tried HFLC, zero carb, Warrior diet, and Carb Nite Solution with no lasting results. Supplements are all maxed out for intake, and I don’t want to introduce insulin unless he truly needs it.

    I’m encouraged, because the scale needle moved downward since last Wednesday’s fast–down 3 lbs. I don’t know if fasting gives gifts beyond the actual fasting date, but his FBS keeps decreasing each morning. I’m eager to try fasting again this weekend to see what happens next week.

    What’s good for the goose is good for the gander (in this case), as my own BS numbers run about 5 points behind his. I am joining Hubby in the fasts, as my own scale needle has not moved since I had to quit zero carb for gastric disturbances.

    I wish you had a clone down here in Virginia.

  4. I do not have Type II diabetes, and my BMI is 22, whatever that amounts to in terms of mortality. However, there is plenty of history in my family of type II diabetes and also bariatric surgery. I just spent about three years, buying my own medical tests to prove that the diet offered up by the respected institutions (AHA, ADA, etc.) was a complete fraud. Based on the test results the only conclusion you can come to is that the point was to change the diet to make you sick, which would then be treated with a long list of drugs, depending on which chronic disease resulted from the dietary advice.

    It seems like daily you learn of some massive institutional failure, either government, or quasi-government. The treatment of Type II diabetes is but one example. If you step back, and you see life spans leveling off, a huge increase in chronic disease, isn’t it time to look at the practice of modern medicine as one more failed institution? Could it be that this is one of the biggest elephants in the closet responsible for the increase in the cost of medical care; the costs are resulting from medically induced disease! You can object and say it is all due to USDA dietary guidance and the processed food industry working 24/7 to find your bliss point, and induce you to eat garbage. However, the medical profession, could have stopped this freight train, but collectively they got on it. Medical doctors have no knowledge of nutrition, and could not care less, when it comes to using it as a treatment for any disease. Don’t you find it strange that the prevailing view is you can eat anything, but take this drug, and it will have a predictable effect? In other words a calorie is a calorie when it comes to food, but not when it comes to drugs. I am 68 years old and I have never had a medical doctor ask me what I ate in my life. To the medical profession it is irrelevant unless you clearly have been poisoned.

    I am afraid that modern medicine, as currently practiced, is either a failed institution, or it is getting close to that point.

    • Standing ovation with LOUD clapping!

    • Devialini De Souza

      Well Said, Samuel. We need more doctors like Dr. Fung and Prof. Noakes who genuinely care about people and their health and not about how much money they are making. They are definitely pioneers and I think, with the internet being what it is, this message will spread across the globe fairly quickly.

    • Hi Samuel, I share most if not all of your sentiments. All medicine is bad medicine if a patient’s lifestyle is never addressed or deemed inconsequential. Real medicine begins and ends with how well the patient cares for his/hers “equipment”. I equate Type 2 Diabetes with most home computers. When the computer is new, of course, it purrs like a kitten. But if you continue to operate that computer without performing scheduled “preventative maintenance”, the computer will progressively slow in speed. Some people prefer to clean their computer, daily. Others, weekly. Some, spradically. But the great, vast majority are “toe pickers”. They don’t believe in P.M. . They view all equipment as disposable; When it starts to fail, dump out the old and buy a new one.

      This is Obesity and Type 2 Diabetes, people are getting old and slow, prematurely, because of the utter lack of care they perform on themselves.

      People who understand the critical importance of “P.M” come to recognize the same truth(s) as you, Sam: Medicine must be administered through adjustments in “lifestyle” and “routine”. Hippocrates — ‘Let food be thy medicine and medicine be thy food.’ Diabetes (cancer, heart disease, alzheimer’s) is not something to “treat” but “avoided” (through daily P.M.), instead. In other words, when it comes to time for you to see a “diabetes specialist”, you’re only about 20 years too late…

      …btw, I’m still using MS XP for my OS and running just as fast as always…

  5. Dr. Fung, have you, or anyone else evaluated T2D patients post fast using Joseph Kraft’s criteria for insulin resistance? Carbohydrate restriction and fasting seem to help many people reach HgbA1C levels below the threshold value for diabetes. Does it also change the response pattern of insulin during a five hour oral glucose tolerance test?

  6. I am an RN working as a CDE in a small clinic. A very self motivated, smart patient brought your work to my attention telling me that we have it all wrong – the insulin is making things worse!! I was indeed intrigued, as it is not news to us here that insulin resistance is the toughest issue to address – so I went onto your website and did some reading, watched one of your YouTube presentations to a group of Dr.’s – I was even more interested…and then I read this post, and was very disappointed. Although the bulk of the information is of interest, my ability to absorb it was overshadowed by my disgust in the fat shaming that was so freely revealed. It is difficult to take this potentially very valuable information seriously when a professional person uses such offensive language to describe another human being.

    Dr. Jason Fung: I’m interested to find out what you felt was ‘fat shaming’ I’ve devoted my life to overcoming the problems of obesity and diabetes, and have written an entire book about how obesity is a hormonal issue, rather than a moral one. I work with obese patients every single day with the hope of helping them. I think this is the first time I’ve ever been told I’m ‘fat shaming’.

    What part of the article ‘shames’ fat people? I will gladly change it.

    • If you want to see “fat shaming” look at 98% of the diet industry. The whole financial model is based on convincing you that your predicament is due to your gluttony and sloth. In fact, the same goes for the exercise industry. If you don’t run 15 miles before eating that low fat bagel you are to blame for your predicament. If anything, this blog is the antithesis of that model of obesity. I would bet that the majority of people working in your clinic side with the diet industry, not Dr. Fung.

    • Intermittent fasting seems to work for me, not least because I can get away without fasting for periods, as long as I don’t relax my diet for too long at a time. The weight goes on quickly when I stop fasting or I eat more carbohydrates, but comes off just as quickly when I reduce carbohydrates and do a few 24, 36 or 48 hour fasts. Most days I fast more than 16 hours overnight anyway, with my last meal ending by 7:30pm and the next meal not starting before noon the following day. It’s only on holidays away from home that I eat three meals a day and that’s because of socialising rather than out of hunger. I had previously lost a lot of weight by a calorie-restricted low-fat diet but it was hard work and did not give me the stable non-diabetic blood glucose levels that I now enjoy. My doctors were impressed by my progress but have turned down my repeated offers to work with them in helping to motivate other patients to learn from my experience.

    • Melanie, After reading your comment I went back and re-read the post and I fail to find any incidents of fat shaming. As far as I can see, the only shaming going on is pointed at the terrible advice that got us to this state…the misbegotten idea that is still being force-fed to people with T2D (by the very institutions they should be able to trust) that they must eat lots of carbs many times a day…and make sure to take the medications that they will need more and more of as their ‘chronic’ and ‘progressive’ disease gets worse! I have always understood that it is the terrible information being handed to the vulnerable that Dr Fung decries…certainly not the innocents who trust and follow the advice. And the conventional advice being handed out by the majority of the health-care system, that results in people getting sicker and sicker, is richly deserving of ridicule in my opinion.

  7. Important article! Today’s medicine is primarily predicated on making money. I don’t think there’s too much money in fasting. Maybe under medical supervision, there is some money exchanged but not a lifetime of using medications everyday.

  8. Although I’ve never experienced any health problems in my life, I’ve been fasting since the year 2000. I do it mainly for the touted health benefits in hopes of maintaining my good health…. as insurance, so to speak. I personally enjoy doing prolonged fasts of 15-30 days once/year. I also try and do a 3-4 days fast once per month (1st week of every month). I guess you can say I’m a “pro” at this. 😉 The more you practice it, the easier it becomes.

    It’s refreshing to see someone of Dr. Fung’s stature educating those who may be unfamiliar with fasting and clearing up many of the misconceptions, such as it being a “starvation diet”. God knows how many times I’ve tried to “educate” people about the benefits of fasting and they all look at me as if I’ve escaped from the Funny Farm.

    An absolutely fantastic job and a great service you’re doing, Dr. Fung, in trying to educate the masses about the benefits of fasting, and I hope to continue seeing your ongoing blogs about fasting!

  9. @Elliot: Not to mention that if everyone practiced some form of fasting, it might put half the doctors in the medical field…. out of business!

  10. tewolde isaac

    Breakthrough article!! I have started Intermittent fasting so as to reverse the diabetes 2 no matter it works or not.
    I would like also to ask Dr.Jason Fung does diabetes has connection With family history?

    • Devialini De Souza

      Dear Tewolde Isaac
      According to research, it seems that the level of carbohydrate tolerance is genetic. So if you have a history of diabetes in your family, you’re probably at risk of diabetes. Both Dr. Fung and Prof. Noakes acknowledge this in their articles/videos.

      Watch Dr. Tim Noakes videos, who was diabetic himself. They have some useful information on this

  11. Dr Fung, another fantastic article from your knowledge bank ! I deeply appreciate your efforts and how much it moves me to see how you are spreading awareness among the community.
    Could you also throw some light on the insulin resistance that develops during pregnancy ? Is there any pretext for the condition ? Why some ladies retain high blood sugar even after delivery ?

    Dr. Jason Fung: A good question that I do not have a good answer to. Clearly, there is a hormonal effect of the sex hormones, but the exact effect is unknown. Points once again to the fact that diabesity is a hormonal, not a caloric imbalance.

    • High progesterone levels cause insulin resistance in pregnancy. A pregnant woman can have levels up to 10 x pre pregnancy progesterone levels.
      Levels normalize once baby and placenta are delivered in most cases.
      Also in menopause women produce almost zero progesterone which in my case caused low blood sugar several times a week. I was put on rx progesterone which cured this. However now my morning bg is high as the progestérone has to be taken at night as it makes you sleepy. Id rather deal with the highs by diet and exercise than getting lows and feeling like im dying over and over again…

  12. I always enjoy your blog and efforts to present research that has been done. I have lost 55 lbs so far using fasting and low insulin foods.

    I have a brother with DMII and told him about my success and referenced your website. I found out last week that he is going with surgery. I don’t think he gave fasting a serious trial. So many obese are frustrated and tired. They just hope that a procedure will remove their constant hunger.

  13. I PERSONALLY would encourage people to do longer prolonged fasts of at least 4-5 days or as long as a month if they are medically able to do so. Intermittent fasting doesn’t seem to offer the same health benefits as would a straight, longer fast would. It appears that it would take at least that long (4-5 day fast) for the immune system, for example, to reset itself.

    On those days I do eat, I find eating breakfast like a King, lunch like a Prince, and dinner like a Pauper works very well for me. No snacks in between meals and no eating after 6:00pm. I also follow a low-carb/high-protein/medium-fat diet.

  14. Devialini De Souza

    Dear Dr. Fung
    I am a big fan of yours and I have now been on a LCHF diet for 3 weeks. I feel so much better, my sugars are better than they have ever been. Thank you.

    I came across Dr. Jack Kruse and his website and he has some interesting ideas. I have posted a link to his website and a video interview. Would really like to know what you think.

  15. Speaking of gastric banding, would a hiatal hernia effectively be the same thing? It worked that way for Hubby–he was throwing up after being diagnosed with one, so I cut back his portions, and…BINGO! No more throwing up. I kept o cutting…and cutting…going from SAD to GF, then Paleo, then LC, then keto, then Warrior, and now fasting twice a week Jimmy Moore-style.

    Jimmy’s going to start a fast-off in January, and lots of people have already signed onto it. I have to see where Hubby’s at in terms of fasting while working (stress, etc,) before I sign us on. I may just sign on by myself, since I’m a SAH housewife.

    So far, Hubby’s results have been miraculous for BS, and he’s actually lost 3 lbs. from a scale stand-still. My own results have done wonders for my BP and BS–no weight lost yet.

    Dr. Fung, you really need to get together with Jimmy and write a book on fasting clarity–the fasting book world is so full of TRIPE! I wrote to Jimmy about it–see if he can forward you a copy of it.

  16. Just been released from hospital, my lungs filled with water as a result of stopping my furosemide, big mistake, shan’t do that again, almost suffocated.
    I’ve been diabetic 15years, just heard about this cure for diabetes, I’ve already fasted twice for two days in the first week and it was easy, since then Ive waited until I’m hungry this past two weeks, now I’m keen to try a weeks fast.
    Think I’ll do a bit more reading up on dr Fung whilst I recover, before continuing with my cure, is their somewhere I can go to for help, my doctors here in the uk are hopeless ?

  17. Devialini De Souza

    Dear Dr. Fung

    Just wanted to share this website with you. It has some really useful practical information on ketogenic diets. Maybe you could refer your patients and bloggers to it. Its quite helpful

  18. Eating LCHF is not helping with my weight or BG numbers so have high hopes of fasting. I’ve been doing alternate day fasting for a couple months now with no weight lost and only teeny minor BG changes. I guess I need to try to fast longer than 24 hours but tend to find that difficult – though right now 42 hours into my current fast. No drops in BG. I feel pretty good though. Tough to string a lot of days together “in real life” however. For example I have a luncheon engagement tomorrow. Something always seems to come up!

  19. […] are, indeed treatments that cure Type 2 Diabetes (T2D). Bariatric surgery is one such treatment. Fasting protocols have been known for close to 100 years to cure diabetes as well. Very Low Carbohydrate (sometimes also called ketogenic diets) can also sometimes cure […]

  20. joy donabel

    dr. fung… i have a question…. i have family history of dmII and my husband has it too… although i dont have diabetes.. i want to encourage him to fast… and i shall fast with him… but my problem is i have peptic ulcer… is it adviseable for me to to fasting? any advise will be highly appreciated. by the way… i have started to explain to my husband lessons i have learned from your presentations in youtube. thanks dr. fung!

  21. We are both Type2 and have used LCHF for some years. We are not as ketogenic as we would like due to giving in to temptation, and our weight is still slowly creeping up and we would like to have better A1Cs. We are around 6.3.

    So my question is this: I have a problem with dawn phenomenon / liver dumping. If I don’t get up in the middle of the night and eat a sausage (really!) my BS is often around 8.3 pre-breakfast. I aim to stay lower than 7.7 (as per Jenny Ruhl’s advice) at all times. If I fast, will we get liver dumping and increased BS for a time? If so, would this be a temporary situation whilst the body adapts? And should I worry about it or just think how my Insulin levels are improving (although I can’t test for that)?

  22. Dr. Fung, I am a T2D for 20 years and taking 60 units of Lantus with 5 units of Novolog. Is it possible to start fasting with no types of diabetic meds? I have tried this and noticed that my sugars still hover around 300 daily a morning fast after a 2 weeks of intermittent fasting of 20:4 and finally on my third day of 24 hr fast; but BS is still around 300 on a morning fast. Should I get back on my meds and work down.

    Dr. Jason Fung: You should always discuss medication changes with your own physician, as I cannot give personal medical advice here.

  23. Monica M.

    Dr Fung: I am also an RN and found your You tube videos and information to be extremely helpful. I am in the process of trying some of your recommendations and cannot wait to visit my MD to share and inspire him to help his patients. He has been quite liberal with me and encourages me to try things so I am blessed and grateful for that. After two weeks of modified fasting I have lost inches as well as 6 or more pounds so I know that I am on the right track.

    Today is my first exposure to your blog and I was offended at Melanie’s post. I think that you are doing a wonderful job and helping so many people that you should not be spending your time trying to assuage feelings but stay focused on those of us who want to be helped. For those who feel that they are being ‘fat shamed’ there is a quick option of moving away from the blog.. I read that your field is in Neurology and you have now taken on this mammoth task including nutrition and education . Perhaps there is a Psychiatrist whose focus could be aimed towards the ‘mind’ but that is not even necessary since results will be the answer for any ‘fat shaming’ that may have occurred…

    Thank you again.. and keep up the good work.

  24. David Harrington

    I have adopted the principles outlined by Dr Fung
    I am 58 yrs of age diagnosed 20 years ago.
    Delayed insulin usage during first 10 years
    Have had toe amputations on both feet left foot six years ago and right foot last month
    Most recent amputation was a surprise because I thought I had it together in managing my disease.
    I read Dr Bernstein book “Diabetes solution” for the past three years I have been maintaining average blood glucose levels of around 100 by keeping a low carb high fat moderate protein regimen and using insulin. So the amputation was a surprise.
    Bored in my hospital bed, I found Dr Fungs you tube videos. Then I read the blog
    I decided when I was released home I would give his fasting recommendations a go. I had done consistent intermittent fasting of 16-20 hours a day but never multiple day fasting
    Last week I did an 84 hour fast.
    My insulin needs to maintain 100 blood glucose level dropped to 20% of my previous non fasting levels.
    Third day after ending fast insulin required is 50% of pre fasting levels
    Going to start another fast this evening.
    My question is how many fasts will it take to eliminate insulin and have normal blood glucose which I understand will signify elimination of insulin resistance.?
    Also I am 6 foot tall and weigh 250 pounds.
    Thank you

  25. When one fasts and finds that the blood sugar drops low, what do you do? Where can I find this information on this site? I’m convinced about the fasting, but still a little confused.

  26. Linda B,

    I have done a number of fasts with full testing of my BG and Ketones. I am not on insulin but do take metformin 850 x 2 down from 1000 x 2. The lowest BG I ever saw was 60 and I felt just fine. The highest Ketone I saw was 4.7 on the same fasting day as my BG of 60. I don’t know what you consider low but I would have thought 60 was too low for me, but it turned out to be just fine. I worry less about the low end, and more about the high end.

  27. @. Liz – .have you tried the IF suggestions as discussed by Dr Michael Lara – You tube video entitled “How to Begin Intermittent Fasting For Maximal Fat Loss” ..?The link is below-

    I found it to be comprehensive method when following an intermittent Fast as well as recommendations for nutritional supplements as well. It was also quite helpful in explaining the ‘feeding windows” and how to move into the fasting using “induction” and “maintenance” phases.. It is working much better for me than trying to do 36 hour or other fasting. Give the presentation a try, won’t you? I do not even feel as though I am fasting and I am having great results with my weight loss.

  28. Hi All,

    I am a T2 diabetic and struggling with my control for the past couple of years (No insulin but Metformin and diaglucide daily).

    I have received so much confusing and contradicting advice that I have struggled with weight loss and T2D for many years.

    I have been reading up a lot out of desperation and came across this website after Dr Fung presented at a LCHF seminar in Cape Town and have now read the whole blog to try and educate myself as much as possible. I have read the Banting book by Tim Noakes as well and have been trying and sticking reasonably well to a LCHF eating routine from about March 2015, for about 5 days per week initially and then 7 days per week. HAC1 dropped for very high to between 7 and 7.5. For me, just the LCHF was not the full answer and there was more that I had to do.

    Based on Dr Fung’s website – I tried intermittent fasting for the past 60 days. Mainly the 24 hour IF – dinner to dinner, eating about 3 hours before going to bed for 5 days per week and cutting out fruit and all carbs.

    Latest HAC1 test on Monday 2nd Nov this week: Result = 6!! My doctor is very happy. And so am I! I am trying to stick to this for another 6 – 8 months to try and lose a large amount of weight and try and reverse the T2D.

    I would like to encourage every one that is struggling with T2D that improvement is possible – just try and get your mind around the IF concepts and do it is baby steps. It becomes “natural” after a while and the craving for sugar and carbs do reduce significantly over a relatively short period of time.

    Thank you Dr Fung for your advice – it is genuinely appreciated! Keep up the good work. And all the best for all T2D sufferers who are embarking on a life long change in your life – for the better!

  29. Susan Sutton

    My T2 diabetes has gotten progressively worse since being diagnosed in early 2012. My kidney function is now causing concern for my doctor. My latest Hba1c was 8.9. I take 1000mg dose of Metformin twice a day and have just started Trajenta 5mg daily.

    My question is as I have just started intermittent fasting will Trajenta stop my glycogen levels from falling as one of the ways it works is to reduce glycogen release.

    Also should I continue with my twice daily Metformin as I’ve been advised to take this with breakfast and dinner.

    I’m very excited about intermittent fasting as I’m terrified of starting Insulin really hope I can share another success story.

    • Simsimcolacola

      Please do not stop meds cold turkey. Let your doctor lower your meds or stop them if he sees it necessary. You will put yourself in danger that way.

  30. Greetings in Christ!!

    Fasting is a beneficial form of cure in assisting one to cleanse their soul spiritually in Christ as well as benefiting the body from many metabolic disorders through our corruption of food in our modern era which is of course the direct threat.

    If we observe the Athonite diet of Mt Athos where diabetes, heart disease, stroke, cancers, and many other diseases do not exist we find the very SECRETS within monastic living: combining Christian praxis (lifestyle) with a very healthy mediterranean diet and in particular to fasting!! Fasting is in itself- a “medicine” hence it is well known not for hundred of years that some claim, but in fact for thousand’s of years- from the very roots of Christianity: for it is Jesus our Holy Lord Who taught humanity of this medicine and showed it through His examples. So we should GLORIFY Christ our God not just “science”. The other thing I like to point out also, during periods of intense fasting don’t forget you should take a slow release comprehensive multi vitamin with oxidants- preferrably one that lasts for 8 hrs. I take mine all the time- I see huge benefits combining prayer (Christian prayer ONLY) with fasting, a healthy diet and exercise AS WELL AS taking my multi daily. Here are the SECRETS to a blessed life. Don’t just rely on science- but look at what Monasticism has proven for the science of God outweighs everything else. God bless!!

  31. G.B .Harinath

    Hari I am from India and Karnataka ,here many diabetics are taking Accupressure treatment and are quitting oral medicine and also insulin but under condition of taking Accupressure once in a week and subsequently every 15 days , the next condition is eat only when hungry and drink water when thirsty,and also so many cases of diabetic sores which could not be treated by modern medicine are cured without medicine .Even kidney failure patients are cured,one nri from US who was treated from Stanford medical college got cured and relieved of trice a week of dialysis, if anybody wants to see the testimonials please visit www Indian accutouch .com. This comment is for my brothers and sisters suffering and to know what is happening around the world and make use of the treatment and come out of their issues and live a peacefully and a happy life as nature intended. Jai hind.

  32. […] Una de las personas pioneras que se encuentra promoviendo este tipo de tratamientos para CURAR la Diabetes Tipo II es el estadounidense Jason Fung. […]

  33. I have become familiar with your work after learning of you on a low carb forum. I have dealt with insulin resistance for about ten years now. I took metformin for a couple years, but I hate taking pills and it did very little in helping get my numbers down.

    I was able to go from 11.2 to 6 somethings for quite some time, even after quitting the metformin. But now my bs is going up and is over 200 in the morning upon waking up.

    I know I need to fast with no food, only water, coffee, broth etc. I have been able to go until after noon for any food most days. I’m eating a lot less and I do not snack. I do best with a small meal early afternoon, and another small one around dinner time. I am done eating for the day at 7 p.m.

    My morning number is still hovering around 200. I know I have to fast for a few days to make a significant difference.
    But I’m having a hard time accomplishing this, although I won’t stop trying.

    I wish there were a clinic in the seattle area who could help me with monitoring and supporting me while I work on fasting for a few days.

    Do you know of any practitioners in my area who follow the same science and treatment as you do?

  34. Intermittent fasting is a powerful approach to eating that is becoming very popular because it can help you lose weight while reducing your risk of chronic diseases like diabetes and heart disease.

    Intermittent fasting can be undertaken in several ways but the basic format alternates days of ‘normal’ calorie consumption with days when calorie consumption is severely restricted. This can either be done on an alternating day basis, or more recently a 5:2 strategy has been developed, where 2 days each week are classed as ‘fasting days’ (with <600 calories consumed for men, <500 for women).

  35. Tim Steinert

    Fasting is not a cure (Intermittent or not). It’s not even practical for many people. It used to be what doctors would do to prolong the life of Type 1 diabetics. Put them on a starvation diet. It’s no way to live.

    Eat the right amount of nutritious food and exercise. It’s not quick, glamorous or sexy. It’s reality. This is coming from a Type 1 diabetic. No matter what I do, until there is a real cure, my diabetes is not going away. Type 2 diabetes is not CURED. It is controlled. You MAY be able to get off of meds through better eating and exercise, but there is no guarantee. You could do everything right and still need to go on insulin.

    • Fasting is for T2D not for type 1. T2D is usually a disease caused by eating too much and fasting is helping patients in lowering the food intake and keep it low for the rest of their life. I see nothing wrong in this. I think we can call it a cure, because the sign of diabetes disappear. Of course if one starts overeating again will come back. If you cut your finger with a knife and the wound heals, coming back at it with a knife the finger will get another wound. That does not mean it was not healed the first time. 🙂

    • Completely wrong, type II diabetes can be completely cured through caloric restriction. This reduces fatty liver which causes the type II diabetes. The key for types II diabetes control is sugar and insulin reduction. Fasting in combo with Lc diet helps this.

    • You’re a troll.. Get off this site because you have absolutely NO idea what you are talking about. Please people do not buy into what this guy is stating. There is not one fact in his gibberish!!

  36. Katherine

    I’ve never fasted – is there a right way and a wrong way? Do you just not eat for a set number of hours?

    • My suggestion is to sign up for the free month at Lots of great information there. As well, read Dr. Fung’s book The Obesity Code. Lots of information there as well.

  37. Great advice! I just finished Dr. Fung’s book and have decided to read it again. It is a powerful life-changing discussion of scientific proof, and facts, along with world-wide studies, leading to the cure of T2D. I have enjoyed a 40% reduction in the amount of insulin in three weeks time. I feel empowered!

  38. Can someone tell me exactly the type of fasting program Dr.Fung recommends?
    There are so many and I’ve never heard him say the fasting program he says to follow.TIA

  39. Ahmad Luqman Alias Firdaus Bin Ab Patah

    Did we entirely eliminate insulin resistance once we have success with fasting regime?

  40. i have once had my diabetes reversed after a Lenten fast. I only fasted upto noon for fifty days and did the prostrations prescribed by Orthodox Church. That is a really good exercise, almost like the Surya Namaskar. I was diabetes free for five years and now, have been diabetic for over 10 years.
    I have restarted fasting in the same way as I did then, inspired by Dr.Fung. I am 15 years older and cannot to the prostrations.
    I stopped my Metformin and Lantus. Yesterday night I had a two egg omelette with onion, pepper and grated coconut at 7.30 pm as dinner. My fasting bs today was 91. I had green tea with ginger and a little brown sugar ( the dry ginger cube comes in this manner) and my BS was 114. I had a millet, veg and chicken lunch, but driven by a need for something sweet, I ate 3 dates and a banana as well. One hour post prandial was 174. One hour after egg and tomato dinner, 112.

    Tomorrow, can I satisfy my sugar craving with stevia? Or Splenda?

    I live in Kerala, Southern tip of India. I stopped seeing doctors as they always keep trying to give me more medicines. So I took the decision to try the intermittent fasting method that I know of after stopping medicines to prevent hypoglycaemia. I can manage without drugs on LCHF as I have lost weight from 58 kg to 54 kg. , I think, due to Metformin.

  41. […] Fasting Cures Type 2 Diabetes – T2D 4 […]

  42. I’m reading some of these posts and surprised that ppl are able to fast for days on end. Am i missing something do we mean no food nor drink whatsoever ? Ie what are the rules to fast healthily?

  43. I know that A1c can take 3 months or more before a difference is evident. I’m wondering if this time is shortened with fasting?
    I’m new to this…diagnosed ‘prediabetic’ a year ago; a few months later up to 6.6 A1C. I used to fast 24-48 hours a week but quit several years ago. I started again; did 24 hours a week for a few weeks and now have done 3+ days twice in the last 3 weeks. I’ve lost a few pounds but not what I might have expected. I haven’t been checking glucose every day but have a few times a week. It’s hard to say if there’s a difference in BG with the irregular testing. Last few times it’s been between 97 and 125. Before fasting it rarely was above 130.

    Any insights on how long before I see consistent lowering of BG & A1C? I can’t go much longer than 3 days fasting because of work so I may have to do more consistent/long-term 24 hour fasts.

  44. in test tube baby we can able to cure diabetes or not which was coming from generations

  45. I used to do 20-4 hrs fasting window every day but my suger remains high at 300plus.. But without any medicine . Any Instructions???

  46. Why isn’t anyone here cured yet doctor? If you don’t eat – blood sugar goes down – Because you didn’t eat. Just like many levels go down. Not eating – will NOT curb insulin resistance. You will still have Diabetes – You will just fly under the radar for a test that determines diabetes. You will 100% still have diabetes if you fast – but equipment used to determine if you have diabetes would not detect it – because its based on determining how much of what you ate is in your blood instead of making its way to cells – and when you don’t eat there is nothing to count. Its as if you’re spoofing a piss test for drugs – in the end your problems are still there.

    I’ve never seen a worse interpretation of a set of data in my time. Its not these people who failed either – its desperate individuals and people who see others suffer who so desperately want to believe in something.

    There is no cure here – there is only fooling tests. Insulin will be an issue no matter how many times you fast – waiting for you. This issue is a complex one – understand there are doctors out there working on your behalf to attempt to actually make individuals medicine and testing free. But you don’t hear about those doctors, because they are not marketing themselves or trying to make a living off the traffic.

    Understand the body of work before you. There is some fine advice to be found in some articles and “work” of Jason Fung – Specifically the work everyone else did. The work when paroted – as opposed to misused – is beneficial to people. I have trouble finding value in the life of Fung specifically as I cannot find any work, any advancement in the medicial field which can be accredited to him in part or whole. There is a simple way to avoid this criticism – leave the baiting out of your life – don’t put cure or reverse in your (what amounts to a saturday blog) *work* – its dishonest.

    No where here did you mention the diabetes was being masked from instrumentation – That diabetes was not being cured – or reversed – but is harder to detect. it is still there and will always be there until we can fix the systems at fault on a cellular level. I understand you want to make a living – I understand business is good – but I don’t condone knowingly lying to people. You know very well the disease is still there. Treat people better.

    • Lol. In Canada, medicine is not a business. We have an NHS system, unlike the USA. What is all your criticism based on? Your opinion? Show us some credible studies that prove your nutty opinion. Please take your ass back to Tin Foil Hat land. People are getting fatter, really fat. Morbidly obese. Maybe you should actually read the Obesity Code before spewing your moronically baseless accusations.

      • martin hammer

        We have a NHS here in the UK, however there is no such thing as a free lunch, the tax payers pay for all of the treatments and the money is given to the massive companies, that’s the system whoever is footing the bill. The point here is that a fatty liver is caused by bad diet because of increased insulin generated naturally to try and combat the “blood sugar” generated by the bad diet, this is a circle that can only reverse when insulin is reduced, the treatment we get is to increase the body’s insulin only making the problem worse. Like treating a massive tooth infection with eating loads of sweets !. The fasting stops the body having to generate more insulin helping the liver and the pancreas to become less fatty and eventually resume their normal function.

    • Max,

      If you are going to troll, at least attempt to do it speaking correct English. By the way, You might begin to study a bit before you decide to talk about a subject that you know nothing about. Gibberish!! Too many people have reversed and even cured their “metabolic condition,” called diabetes. You are welcome to believe the modern medicine claims of the so called “progressive disease,” just refrain from spewing your falsehoods on this site..

  47. Dr. Fung, your article on curing diabetes by fasting is very impressive. I have been digging every day on the net to recover from it. I am 15 years old and diagnosed with type 2 diabetes. Already taking insulin. What type of fasting and what kind of diet I should take. I don’t want to die

  48. I have t2Diab my pancreas is not produc any insulin, I jast found out from a test. Can my panc prod insulin in the future? Also what is a good schedule to begin with for fasting? THX

  49. For most of my life I have been slim or normal weight but have had bouts of anorexia since I was 17. (Fasting isn’t new to me)
    Since my 20s I have also suffered from reactive hypoglycemia but didn’t know what it was and why it was happening.
    Any way I was shocked and ashamed to learn I had T2D when I was in my early 50s. I am of Native American heritage and have been told that we have a genetic predisposition towards T2D.
    My question is: If I fast for 24 hours once a month and eat a low carb diet Will I be cured and will I be able to have a bag of chips again without my blood sugar going up over 180 or 10 mmol?
    I have a BFF who is in her late 50s and very overweight but her blood sugar NEVER goes over the limits of non diabetics and because we are BFFS, We have tested our BGS at the same time and having ate the same things. She doesn’t even have prediabetes! I am a lot slimmer than her but not at my ideal weight and my BG will go right through the roof.
    Will this process cure me or am I only managing it with diet and fasting?
    It’s so strange to have to fast when I’ve spent so much of my life dieting.

    • martin hammer

      I’m no professional but in my experience in order to gain or lost weight you have to first create an imbalance in your diet, if you constantly eat the same you will always remain the same weight, the body is very good at managing its “energy supply” and works to keep the status quo. What you have to do is change your diet and eat differently different days, for example eat a lot one day and less on the other days, as long as there is imbalance it takes time for the body to adjust and you will either gain (if you eat a lot on more days) or lose weight if you eat a lot on only 1 day. This worked for me. I would never calorie count and I am happy with my weight now and I usually eat around the same amount every day (not rabbit food or any other diet, I just eat a home cooked meal every day with a breakfast, lunch and occasional snacks (My snacks in the evening often consist of 2 sandwiches with large amounts of fillings). I think I eat a lot more than my recommended amount but as I am consistent I stay at my weight (which I am happy with as I looked terrible when I was too thin).

      • martin hammer

        I too am going to try the fasting method (I only found this out tonight) I plan to start 1 day at a time and go up to fasting for longer when I get the hang of 24 hours, I will keep you informed of my progress. I will monitor my blood sugars regularly and only eat on my fasting days if my blood sugars are too low. I do not wish to lose weight though so I will have to see about regaining weight after / if I cure my diabetes.

  50. Dear Doctor,

    My father has a diabetics 2 as he says but he lost weight already and I wonder if the fasting would be beneficial to him?

    please give me all the suggestions and recommendations that you have since I do have to care for him he is very conservative when it comes to make a good diet. He doesnt want to understand

  51. SUHAS

  52. Will fasting say 30 days once a year have the same effect?

  53. Will fasting once a year 8-12 hours a day for a month be effective?

  54. Someone mentioned that fasting is not a cure, that the blood sugar just lowers because one eats less, and then stated so this is no cure. I thought I would add an opinion on that as I partially agree and disagree. I dont so much disagree on the fact that fasting is not a complete cure. But its the closest thing out there to a cure I think, and if fasting is done properly it allows the body to heal up so to speak far more then it would normally be able to when one eats to much, which is something perhaps we all have been guilty of before. One issues many have seemed to overlook it how one feels. Since diabetes is not all about blood sugar levels. Its about how it makes you feel, as I know it makes one feel horrible, weak, dizzy, sickish and puts one in bed alot just to get that little bit of feel good that sleeping may bring when your a diabetic.
    When the sugar levels go down from fasting one feels far better then one has as far back as perhaps one can remember, if your a diabetic that is. Fasting even allows one to be able to drink something sweet once in a while and not feel so bad, not that one should, but most do. So no fasting may not be a real permanent cure so to speak, but it is a fix. A workable usable fix that brings back the better feelings one had before one was a diabetic. And that is the main reasons so many fast in relation to being diabetic. Just going down to one meal a day, a small one even better, can do wonders in the way one feels in relation to getting rid of the sickish, dizzyish weakish feelings one normally gets with diabetes. Of course fasting should be done carefully, and one does drink liquids by the way ill mention given someone ask a bit back I read. Anyway there is my two cents worth on the matter.

  55. I’m fasting five days now. My pee is still pretty yellow. My blood sugar is 75. I’m drinking water. What do you suggest?

  56. Fasting is dangerous!

    It’s dangerous for the pockets of Big Pharma.

    That’s why doctors aren’t aware of the benefits. No-one has the financial interest to push fasting, or research it extensively. Still now most websites claim diabetes type 2 is not curable.

  57. I never reached type 2 diabetic levels (126 mg/dl fasting blood sugar), but I hover around the 100’s (103, 108, etc)… that is, until I decided to push through a 12 hour fast. My fasting blood sugar went from 100 mg/dl to 82 in under 12 hours!

    I’m pretty sure that I’m just not active enough (43 year old male who drives for a living) to put a big enough dent in my muscle glycogen stores every day, and this has caused my impaired glucose tolerance and insulin resistance — especially when I eat a high-carb meal.

    So while I don’t plan to address my lack of activity at the start, I do plan on eating a hypocaloric Protein Sparing Modified Fast (60g leafy green/low sugar fruit carbs, >=63g protein, and maybe 20g of a good ratio of poly 6/omega 3/mufa fats daily) so I can lose 30+ pounds and get back down to 10% body fat in about 6 weeks or so. SCIENCE!!

    I just hope I can achieve decent satiety or this is gonna be tough 🙂

  58. BettyBamBaLam

    Wow , such an interesting article. I had only ever assumed that T2D was reversible by diet however , had not realised that it is a much more complex illness. Your explanation makes the answer much more simple.
    I am not a diabetic and have always eaten reasonably healthy foods as I have struggled with weight for a lifetime. For a reason I cannot remember , I started 5:2 intermittent fasting less than two months ago. Unlike most people , I find the fast days murder, apart from feeling ravenously hungry, I am light headed and vague at work. I am determined to persevere as I have lost a few KGs. One way I get through my fast days is to voraciously read articles about fasting. Reading Dr Fung’s research and watching videos, is probably the most medically and scientifically established research that I can find on the value and topic of fasting, that offers truly valid reasons for cutting out sugars to achieve medically positive results. Why I have chosen to write on this blog is that I read another response to fasting( nothing to do with T2D), written by a nutritionist who had fasted and exercised on and off throughout her life. In her middle to late years , she developed debilitating osteoporosis. She did not establish whether she had a family history of osteo however , she blamed a lifetime of fasting and warned others not to fast. This leads me to be concerned that the recommended fasts, and the benefits that come from fasting for T2D and all people, would be better to be regulated by a Doctor rather than a freeform approach. I was wondering if this was also a concern of yours Dr Fung and how is this issue addressed?

  59. WOW! This is just great! I read this after a religious fast. I decided to embark on this fast (i was fed up of not being able to exercise this part of me) ever since i was told i have T2D a year ago. I was put on metformin and then insulin was introduced in addition. Metformin made me feel sick most of the time, the dosage kept on increasing. Then i requested to be weaned off metformin and take insulin only. My Blood sugar kept yo-yoing (up and down). At times going so low that i have to take…SUGAR! to pick it up.
    Now i fasted for a day and didn’t take insulin and following day my blood sugar was 5.6! Well i ate that day and it went back up. I decided to take up the fast for a week; during that week it was kept at below 6.5. I now i am more convinced fasting really works. I believe what i actually need is the right diet when i brake my fast. I will post again with my success story after i have maintained a stable blood sugar level (when in fast and when not in a fast).

    • Ohhh and what has always frustrated me is the common belief that people with diabetes are obese. I have never been obese and actually i am the opposite. When i hear statements that “you have to start by loosing weight!” i want to scream “I HAVE TO GAIN SOME WEIGHT!!!” With diabetes i was even losing more weight and it was getting scary and frustrating! So i guess high fat should do for me too

  60. Nonsense! There is no cure for diabetes, if there were you could return to a life of lousy eating after these so called cure measures above and not demonstrate high blood sugar. The measures in this article are only interventions that help you become asymptomatic. If you depart from the interventions, your diabetes symptoms will return. That being said, interventions are helpful to eliminate or deuce your diabetic symptoms. Unfortunately your body may need more drastic intervention in the form of medications.

  61. My T2 diagnosed two years back. I reduced 12 kg by following GM diet followed by diet plan and excericises. I was non diabetic for 2 years. As I gained weight 12 kg again now again diabetic. I trust fast weight reduction and low carb diet, exercises will definitely reverse the T2 daibetes….now again trying to reduce weight…already reduced 4kg in one month..sugar level is normal. Hope it will help…

  62. Wow! this is incredible, I had always thought that fasting is not good for diabetes folks, but now I know better. I will follow this through as you have done.
    Thanks for the information

  63. Dr. Fung,

    I’ve recently found you on youtube videos which have been very informative and helpful to me. I am a type 2 diabetic for about 3 years now, and am trying to control it on 500mg of metformin and diet. I would like to not have to take any medication at all.

    I will do almost anything to get healthy and balanced, and just keeping my carbs low, has kept my sugars low as well, however, I am not losing any weight whatsoever , I am overweight and NEED to lose most of this weight, so whatever I am doing is apparently not working. After reading and watching your videos (most of them) I realize that I need to start intermittent fasting. My problem is, that I can skip eating between meals, but on occasion I get shaky feeling, and I can tell my sugars are dropping, even if I’ve had what I think was a balanced protein and fat meal that should hold me over until the next meal. I also get the dawn syndrome or phenomenon, where I am essentially fasting overnight but my sugars would be higher in the morning….not dangerous high maybe 120’s, and I try to keep it as low as possible. Now it’s to the point where I have to take a small bite of something in the middle of the night so that I can go back to sleep because obviously my sugars are low and I don’t feel well.

    How am I going to fast for a long period of time when this happens? I feel like it’s a vicious cycle of eating. When this feeling happens, I try not to eat, but then I start to feel so bad that I will have something small, please advise me how to get through this while fasting. Do I just have to get through a period of not feeling well. Will my sugars drop to a dangerously low level? Will this happen for a few days and then normalize? I’m so confused and really really want to make this change to get well, I just don’t know how to address these issues. I would really appreciate your input in this matter.

    Thank you,


  64. Thats amazing to read !!!!!
    Please help me out in any way if you can.
    I am 26 years old and I had gestational diabetes but now even after 2 years of delivery my blood sugar is sky high.
    I am on metformin 2 times a day, on a low card diet no sweets at all and exercising daily.
    I am certainly losing weight, my bmi is 20 and I feel weak and dont wanna lose further.
    I have always been active and eating healthy, I feel so bad depressed that I have become a victim of diabetes standing all helplessly .

  65. It would seem to me that bariatric surgery is actually more like a low-calorie diet than anything… people cannot eat much volume, and are told they should eat small amounts frequently. I’m a little confused as to why you compare it to fasting.

    By the way, I think it’s funny that doctors worry about asking patients to fast for health reasons, but not about asking them to fast before procedures.

  66. Diabetes is a real threat to health these days. So, according to you does drinking more water will help in maintaining stable sugar levels…?

  67. Dr. Fung, what is the actual meaning of fasting. Is it completely not eating anything and also avoiding drinking water. If it is then how long will we survive that. Please advice.

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