Written by Dr. Nathan Gershfeld, D.C., founder of Fasting Escape and former staff doctor at True North Health Center.
In my years of working with people who have type 2 diabetes, one question comes up more than any other: “Can I actually reverse this, or am I just managing it for the rest of my life?”
It’s a fair question. And the honest answer is: for many people, yes. Water fasting can produce dramatic improvements in type 2 diabetes, sometimes eliminating the need for medication entirely. But it has to be done correctly, under proper supervision, and combined with the right diet afterward.
Let me explain exactly how it works.
What’s Actually Causing Your Type 2 Diabetes
Before we talk about fasting, it helps to understand what’s really going on in your body.
Type 2 diabetes isn’t just a blood sugar problem. At its root, it’s a fat problem. Your cells, particularly your muscle cells, become clogged with fat. This is called intramyocellular lipid accumulation, and it’s what prevents insulin from doing its job. Insulin knocks on the door of your cells trying to deliver glucose for energy, but the door is blocked by fat. So glucose stays in your bloodstream instead. Blood sugar rises. Your pancreas pumps out more insulin trying to compensate. Over time, the whole system breaks down.
Most conventional treatments focus on managing the symptoms of this process. Medications lower blood sugar or increase insulin sensitivity. Very few address the underlying cause: the fat clogging your cells.
Water fasting does.
How Water Fasting Addresses the Root Cause
When you stop eating and your body exhausts its glycogen stores, usually within the first 24 to 48 hours, something remarkable happens. Your body shifts into a fat-burning state. It starts pulling fat out of storage, including the intramyocellular fat clogging your cells.
As that fat clears, insulin sensitivity improves. Your cells can finally respond to insulin the way they’re supposed to. Blood glucose levels drop. The pancreas gets a much-needed rest from overproduction.
I’ve seen this happen in people who have been diabetic for years. Within a supervised fast of even 5 to 7 days, fasting blood glucose numbers that were previously uncontrollable start to normalize.
Here’s what the research supports:
Improved insulin sensitivity. Studies published in Cell Metabolism show that fasting enhances insulin sensitivity and improves glucose metabolism. When insulin levels drop during a fast, cells become more receptive to the hormone over time.
Lower blood sugar. As the body burns through glycogen stores and transitions to fat-burning, blood glucose levels naturally decline. For people with diabetes this can mean meaningful reductions in fasting glucose within days.
Weight and fat loss. Losing visceral fat, the fat stored around your internal organs, is one of the most powerful things you can do for insulin resistance. Fasting accelerates this process directly.
Reduced inflammation. Chronic inflammation drives insulin resistance. Research published in The American Journal of Clinical Nutrition shows fasting significantly reduces inflammatory markers like C-reactive protein, giving your metabolic system room to recover.
The Part Most People Miss: Refeeding and Diet
Here’s where I see a lot of people go wrong when they try to fast on their own. They complete the fast, feel incredible, and then go back to eating exactly the way they did before. Within weeks, the blood sugar is back up and the benefits are gone.
The fast is only half the equation. What you eat afterward determines whether the results last.
This is actually where fasting has a hidden advantage that most people don’t know about. An extended water fast resets your taste buds. After several days without food, your palate becomes dramatically more sensitive to flavor. Healthy whole foods like fruits, vegetables, legumes, and whole grains taste genuinely delicious in a way they never did before. The processed foods that used to dominate your diet suddenly taste overwhelmingly rich or artificial.
I use this window deliberately. Coming out of a fast is the single best time to establish a health-promoting plant-based diet, because your taste buds are working in your favor instead of against you. The dietary changes that feel like deprivation for most people feel natural and even enjoyable after a fast.
That combination, clearing the intramyocellular fat through fasting and then maintaining low-fat whole food eating afterward, is what produces lasting reversal of type 2 diabetes rather than temporary improvement.
Is Water Fasting Safe for Diabetics?
This is where I have to be direct with you: extended water fasting is not something to attempt on your own if you have type 2 diabetes, especially if you’re on medication.
If you are taking insulin or sulfonylureas, fasting can cause dangerous drops in blood sugar. This is why I ask people on these medications to work with their local doctor to adjust doses before the fast even begins. Blood glucose often starts improving during the pre-fast period, sometimes faster than anyone expects, and your medication needs to keep pace with that.
If you are not yet in a position to fast because of your medications, that is not a dead end. Book a consultation anyway. I will walk you through the specific dietary changes that can start improving your blood glucose right away, with the goal of getting you to a point where fasting becomes a safe option down the road.
Electrolytes, blood pressure, and refeeding all need to be monitored carefully by someone who knows what they’re doing. In my experience, the difference between a supervised fast and an unsupervised one is significant, not just for safety but for results.
Supervised fasting doesn’t have to mean checking into a residential facility, though for some people that is absolutely the right choice. At Fasting Escape, I work with people who are good candidates for remote supervision, with daily check-ins throughout the entire program, from pre-fast preparation through the fast itself and into the refeeding period. For those who need a higher level of in-person care, I’m happy to point you in the right direction.
What Results Can You Realistically Expect?
I want to be honest here rather than make promises I can’t keep.
For people with early to moderate type 2 diabetes who commit to dietary changes after the fast, the results can be genuinely transformative. Significant reductions in HbA1c, reduced or eliminated medication, and sustained improvement in blood glucose control are all possible.
For people with more advanced diabetes or other complicating factors, fasting may produce meaningful improvement rather than full reversal. But meaningful improvement in diabetes is still life-changing.
Not everyone is a good candidate for water fasting. That’s exactly why I offer an initial consultation before any program begins, to assess whether fasting is the right tool for your specific situation, and if it isn’t, to give you honest guidance on what your best next steps are.
Ready to Find Out If Fasting Is Right for You?
If you have type 2 diabetes and you’re tired of managing symptoms without addressing the root cause, I’d encourage you to book an initial consultation.
We’ll go through your health history, your current medications, your goals, and your lifestyle. If fasting is a good fit, I’ll explain exactly what a supervised program looks like and what you can realistically expect. If it isn’t the right fit for you, I’ll tell you that honestly and point you toward what I think will actually help.
Either way, you’ll leave the consultation with a clearer picture of your options and a concrete next step.
Book your initial consultation here
Frequently Asked Questions
Can type 2 diabetes be reversed with fasting? For many people, yes, particularly those with early to moderate diabetes who combine fasting with a health-promoting whole food diet afterward. Water fasting addresses the root cause of type 2 diabetes by clearing the intramyocellular fat that drives insulin resistance.
How long do you need to fast to see results with diabetes? Even a 5 to 7 day supervised water fast can produce meaningful improvements in blood glucose and insulin sensitivity. Longer fasts of 10 days or more may produce more substantial results depending on the individual.
Is water fasting safe if I’m on diabetes medication? Fasting on diabetes medication requires careful coordination with your local doctor before you begin. Medications like insulin and sulfonylureas need to be adjusted down during the pre-fast period as blood glucose improves. Never attempt an extended fast on diabetes medication without proper medical coordination.
What should I eat after a water fast for diabetes? A whole food plant-based diet low in fat and processed foods is what produces lasting results. The good news is that your taste buds reset after an extended fast, making healthy eating significantly easier and more enjoyable than it was before.
How is Fasting Escape different from fasting on my own? Fasting Escape provides daily check-ins with Dr. Gershfeld throughout your entire program, covering pre-fast preparation, the fast itself, and the refeeding period. This ensures your safety, optimizes your results, and sets you up for long-term success with diet after the fast.
Written by Dr. Nathan Gershfeld, D.C. Doctor of Chiropractic with 14 years of clinical experience in fasting and natural health. Dr. Gershfeld spent 6 years at the True North Health Center as an intern and staff doctor, then founded Fasting Escape, first as an in-person fasting clinic and now as a remote program bringing doctor-supervised fasting to people at home.