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Fasting Diet Combined With Beta Cell Regeneration Might Reverse Type 1 Diabetes


Periodic fasting has long been demonstrated to have beneficial effects on autoimmune disorders, cancer prevention and treatments, cardiovascular disease, and a myriad of other ailments. This most recent paper by Cheng et al. might add the treatment of Type 1 diabetes to that list [1]. If successful in humans, it has the potential to reverse some or most of the loss of insulin-producing cells within the pancreas. Just as remarkable, the treatment itself is relatively straightforward, consisting of a regimented protocol of periodic fasting-like conditions.

Generally speaking, Type 1 diabetes results from an autoimmune mediated depletion of insulin-secreting pancreatic beta islet cells. In contrast, Type 2 results from lower cellular sensitivity to insulin. Type 2 is primarily caused by environmental factors such as poor diet.

The current medical approach to treating Type 1 diabetes is the periodic administration of insulin, usually through self-administered injections. Most new therapies focused on curing Type 1 diabetes are looking to repopulating beta islet cells through the use of reprogrammed induced pluripotent stem (iPS) cells.

However, these approaches are not as simple as the method demonstrated by Cheng et al in this recent study. The treatment consists of a “fasting mimicking diet” (FMD), which for mice corresponds to 3-4 day cycles of a high-fat and low-calorie diet, maintained for at least a month, followed by refeeding. This was performed on transgenic diabetic mice and also normal mice that had their beta cells depleted through the administration of high doses of a toxic drug.

Results were also repeated using human diabetic primary beta cells in culture. In this case, the treatment consisted of the addition of human serum from individuals undergoing FMD. The results were impressive, with all sets of experimental models exhibiting almost normal responses to glucose and insulin tolerance tests. Perhaps even more unexpectedly, the regrowth of pancreatic islets, following FMD and re-feeding, led to higher ratio of cells differentiating into beta cells, as opposed to other types.

Furthermore, normal diet combined with the addition of the drugs rapamycin and H89, which inhibit mTor and PKA respectively, led to similar results, suggesting that these signalling pathways are required for beta islet cell differentiation.


Can it be so simple that Type 1 diabetes in humans can be reversed by adhering to a similar diet, perhaps in combination with rapamycin and a PKA inhibitor?

Our optimism should be tempered with the fact that earlier studies have also had high hopes. The discovery of a new hormone in 2015, dubbed betatrophin, also appeared to promote beta-islet cell expansion. Unfortunately, this work was later found to be statistically invalid and thus retracted[2]. Clearly, reproducibility is key for all trials.

Right now the study authors have stated that a pilot clinical trial has demonstrated the feasibility of this approach, and more expanded and randomized trials are set to begin. We look forward to the results!


[1] Chia-Wei Cheng, Valentina Villani, Roberta Buono, Min Wei, Sanjeeve Kumar, Omer H. Yilmaz, Pinchas Cohen, Julie B. Sneddon, Laura Perin, Valter D. Longo. “Fasting-mimicking diet promotes Ngn3-driven β-cell regeneration to reverse diabetes”Cell. 2017 Feb 23; 168(5): 775–788.e12. doi: 10.1016/j.cell.2017.01.040

[2] Yi, Peng, Ji-Sun Park, and Douglas A. Melton. “Retraction Notice to: Betatrophin: A Hormone That Controls Pancreatic Β Cell Proliferation.” Cell 168.1-2 (2017): 326. PMC. Web. 30 Mar. 2017.

About the author
Oliver Medvedik

Oliver Medvedik

Oliver Medvedik, Co-founder of Genspace citizen science laboratory in Brooklyn NY, earned his Ph.D. at Harvard Medical School in the Biomedical and Biological Sciences program. As part of his doctoral work he has used single-celled budding yeast as a model system to map the genetic pathways that underlie the processes of aging in more complex organisms, such as humans. Prior to arriving in Boston for his doctoral studies, he has lived most of his life in New York City. He obtained his bachelor’s degree in biology from Hunter College, City University of New York. Since graduating from Harvard, he has worked as a biotechnology consultant, taught molecular biology to numerous undergraduates at Harvard University and mentored two of Harvard’s teams for the international genetically engineered machines competition (IGEM) held annually at M.I.T. Oliver is also the Director of The Maurice Kanbar Center for Biomedical Engineering at the Cooper Union, New York City. The Maurice Kanbar Center for Biomedical Engineering is open to all Cooper Union faculty and students working on bioengineering projects requiring equipment and space for tissue culture, genetic engineering, biomechanics, and related research. Faculty that is currently using the facility are pursuing groundbreaking biomedical research in such fields as biomedical devices, tissue engineering, obstructive sleep apnea biomechanics also collaborating with several major New York City-based hospitals. The Kanbar Center continues to provide space for undergraduate teams participating in the international genetically engineered competition (iGEM) during the summer, as well as space for courses that offer a biological laboratory component.
  1. December 3, 2017

    Incredible. If it turns out we really are able to reverse type 1 diabetes, then who knows what other chronic ailments we might eventually be able to cure? Type 1 diabetes would’ve been one of the last things I would think we’d find a cure for.

    • December 3, 2017

      My money is on the recent approach where they modified other cells in the pancreas to produce insulin in the presence of glucose but the immune system does not attack them.

  2. December 13, 2017

    Does anybody know when/where clinical trials are taking place?

  3. March 7, 2018

    I’m already a fasting -Christian. I’ll put my hand up for the trial. I’m on the pump too. I’m on day 7 right now of my fast

  4. April 30, 2018

    I am a type 1 diabetic who started fasting. I completed the GAPS diet for 2 years to restore gut health and microbial diversity in the gut while also following a paleo autoimmune protocol. It lowered my insulin needs significantly, but not fully. I then started fasting and remarkably am able to go anywhere from 1-5 weeks entirely insulin-free, not even needing insulin for meals. I habe done 8 fasting cycles, lasting as long as 3 full days with nothing but water, and it has remarkably worked every single time. People dont believe me when I tell them i’m able to go insulin-free – not even any basal! And I had my c-peptide checked after my last fast while insulin-free and it was completely normal. I didn’t even look diabetic anymore (if only we could get rid of all autoantibodies, because the effects are unfortunately temporary! But even one day as a “normal” person is SUCH a gift and so incredibly freeing).

    • April 30, 2018

      Interesting, hopefully, science will soon have the solution to T1 and T2. It runs in my family and is something I am hoping to see arrive soon. I have great hope that creating insulin-secreting cells from other non b cells in the pancreas may solve this once and for all.

    • July 31, 2018

      Hi Melanie ,
      Looking to help my son who is type one diabetic . He was diagnosed at age 12 now 21. He went to college healthy but the stress and food hurt him. We are gluten free high good fats and veggies and protein but he needs more help! trying to clean up his gut and interested in fasting . Any insight on how to start that or any functional medical doctors you recommend ? How are you doing ? Thanks for listening keep up the good work and sharing ! Blessings


    • September 17, 2018

      Hi Melanie ,your story is amazing. I need help with my daughter having the same condition.
      Is it possible to talk ?

    • October 15, 2018

      Do you do your fasting while still taking your insulin and adjust as appropriate? I have been told to do a coconut water fast once a week to check how my body reacts.

    • November 25, 2018

      Hey Melanie, my name is Ruslan. I’ve been a type 1 diabetic for 9 years and I’ve been looking for something like this. I would love to know more about what you did exactly to get those results. I know it’s only temporary but I’ve been looking for something to get off insulin for years… I’ve tried keto, which worked great (for a while). I have also tried fasting. But never for longer than 26 hours. I’m curious to try both or fasting for longer periods. Any tips, help, guidance would be amazing! Thank you

    • January 20, 2019

      Congratulations Hi my name is Slem and I am Ype 1 I would like to try the fasting is there anyway I can get more information I will appreciate it

    • May 7, 2019

      Melanie could you please share your regime with me I would like for my daughter to try this because even one day insulin free is a good day

    • June 17, 2019

      Melanie!! Help us^^^

    • harendrarathore
      March 29, 2020

      Hi Melanie,
      I have recently been diagnosed with Type 3c diabetes and would like to try your regime. Could you please share yours.

    • 7jamshar
      April 30, 2020

      Hi I’m type 1 since 1973, following dr b since 1981. I’m wondering how you are doing today? Still the same results?
      Jamie Sharples

    • kristinbartalos
      August 26, 2020

      Melanie are you still not taking any insulin?

  5. June 9, 2018

    Hi Melanie!

    That’s pretty remarkable! My wife is a Type 1 for about 20 years now and keeps pretty good control. I was researching fasting for Type 1 to improve her control but didn’t think there could be results like yours! Wonderful.

    How long have you been Type 1? And how much insulin were you taking daily before you started the fasting regiment? I know she would ask me after telling her. Thank you!


  6. August 28, 2018

    I am a type 1 diabetic I tryed the ketogenic diet after becoming frustrated with the roller-coaster ride my blood glucose levels were on. It was about 3 months after dx. I went completely off insulin in 3 days and could tolerate a150g meal of carbs after a week Of fasting /ketogenic combined with some supliments. Beta cell lose happens during high blood glucose events . It’s two years from dx and my remaining beta cells still work. I maintain careful insulin dosing and prefer to correct up rather than down but if I forget my insulin I don’t worry I can maintain my blood sugar for days without it.

  7. September 14, 2018

    My wife is T1 and has been for 10 years since she was 13. I have been showering the internet to find a point of contact for her to be part of the clinical testing. Can anyone point me in the right direction?

  8. September 14, 2018

    Hi Richard,

    You can peruse the .gov website It is a database of clinical trials that have been registered around the world and can be searched via keywords such as type I diabetes, etc. Hope this helps.

  9. February 2, 2019

    Before anyone jumps to conclusions about these results, look at the data closely. The mice didn’t return to normal, healthy mice after undergoing the fasting diet. The fasting mice never had healthy levels of blood glocose even by day 78.

    Look at figure 2B. By day 78, the fasting mice blood glucose was still 200mg/dl. That’s twice as high as a healthy mouse.

    The fasting mice were better off than the control mice, but they were still far from healthy.

    If you try this experiment, the best you can hope for is blood glucose that is 2X higher than normal. I’ll pass.

  10. February 3, 2019

    My daughter and husband have Hashimoto’s, and my other daughter has Grave’s. My son, who is 9, was diagnosed with Type 1 diabetes three weeks ago.
    I have been scouring the internet looking for clues in reversing autoimmune disorders.

    • May 5, 2019

      I’ve reversed my hashimoto’s

  11. beedo_1978
    June 16, 2020

    my son has a 7 years old, he has had type 1 since 5 months,
    I am looking to try such kind of system if you could help it will be appreciated.

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