Can type 2 diabetes be reversed?

Reviewed by the JForH team · 2026-10-30

Sometimes. Doctors call it remission: an A1C below 6.5% at least 3 months after stopping all glucose-lowering medicine, under a 2021 ADA, EASD and Diabetes UK consensus. It's not a cure, and diabetes can come back. In the DiRECT trial, 46% of people in a doctor-supervised weight-loss program were in remission at 1 year and 36% at 2 years. Results vary, and you should never stop medicine without your doctor.

What does it mean to reverse type 2 diabetes?

Doctors call it remission. It means your A1C stays below 6.5% when it's checked at least 3 months after you stop all glucose-lowering medicine.

That definition comes from a 2021 international expert panel convened by the American Diabetes Association, with the European Association for the Study of Diabetes, Diabetes UK and the Endocrine Society. A few details from the panel:

• If A1C isn't reliable for you, a fasting glucose below 126 mg/dL can be used instead, or an estimated A1C below 6.5% worked out from CGM data.
• After weight-loss surgery, remission should be checked at least 3 months after the operation. After diet and lifestyle changes, it should be checked at least 6 months after you start.
• Remission should be confirmed with regular A1C tests, at least once a year.

A normal A1C while you still take diabetes medicine is good control, not remission. That includes metformin, insulin and GLP-1 medicines.

Can type 2 diabetes be reversed permanently?

No one can promise that. The panel chose the word "remission" on purpose, because diabetes can come back, especially if the weight returns.

People in remission still need regular A1C checks. They also still need the usual screening for eye, kidney, nerve and heart problems, because the risk built up over the years doesn't simply go away.

How many people reverse type 2 diabetes with diet?

In the best-known trial, DiRECT, almost half did at 1 year and about a third at 2 years. Fewer were still in remission at 5 years.

DiRECT ran in 49 family practices in Scotland and northern England. It enrolled adults with type 2 diabetes diagnosed in the previous 6 years who were not on insulin and had overweight or obesity. People in the program stopped their diabetes and blood pressure medicines under supervision. They lived on a low-calorie formula diet (about 825 to 853 calories a day) for 3 to 5 months, then slowly went back to regular food with ongoing support.

The 5-year numbers come from an extension study that only some people joined, so they're less certain than the earlier results. Of those in remission at 2 years, about 26% were still in remission at 5 years. People who stayed in remission longer had fewer serious medical problems over the 5 years.

How much weight do you need to lose to reverse type 2 diabetes?

In DiRECT, the more weight people lost, the more likely remission was. Here's what it looked like at 12 months, across everyone in the study:

So someone who lost 25 pounds had a better chance than someone who lost 10, but neither was a sure thing. At 2 years, 64% of people who had kept off at least 10 kg (22 lb) were in remission.

Keeping the weight off is the hard part. Only about 1 in 4 people in the program group had kept off 10 kg at 2 years.

How long does it take to reverse type 2 diabetes?

Months, not weeks. In DiRECT, the formula-diet phase alone lasted 3 to 5 months, and remission was measured at 12 months.

The 2021 definition also builds in waiting time. After diet and lifestyle changes, remission should be checked at least 6 months after you start. And the A1C has to be below 6.5% at least 3 months after your last diabetes medicine. Results vary, and some people don't reach remission even after a lot of effort.

Can diet and exercise alone reverse type 2 diabetes?

Sometimes, but less often than with a formula diet. The US Look AHEAD study followed about 4,500 adults with type 2 diabetes and overweight.

An intensive program of diet and physical activity led to partial or complete remission in 11.5% of people in the first year, compared with 2.0% in the comparison group. By year 4 that fell to 7.3%. Only 3.5% stayed in remission for all 4 years.

Rates were higher, about 15% to 21%, in people who lost more weight, got fitter, had diabetes for a shorter time, started with a lower A1C or were not using insulin.

Does bariatric surgery reverse type 2 diabetes?

It can, for some people with type 2 diabetes and obesity. In an Italian trial published in The Lancet in 2021, 60 adults with a BMI of 35 or higher were randomly assigned to medicines or to one of two types of weight-loss surgery and followed for 10 years.

Remission lasted the whole 10 years in 37.5% of people who had surgery, and in 5.5% of those on medicines (one of whom later had surgery). More than half of those in remission at 2 years saw their diabetes come back later, though their glucose stayed well controlled. Surgery carries real risks, and the ADA Standards of Care describe who may be a candidate.

Can a low-carb diet reverse type 2 diabetes?

The evidence is mixed. A 2021 review in The BMJ pooled randomized trials. After 6 months, more people on low-carb diets had an A1C below 6.5% than people on other diets, about 57% versus 31%.

But with the stricter rule, A1C below 6.5% while off all diabetes medicine, the difference was small and not statistically clear. Data at 12 months were limited. The ADA says eating fewer carbs can improve glucose for some adults, and that very-low-carb eating showed its biggest effect in the first 6 months.

Who is most likely to reverse type 2 diabetes?

People who are earlier on, not on insulin and able to lose a fair amount of weight. Across these studies, remission was more likely in people who:

• Had type 2 diabetes for a shorter time. DiRECT enrolled people diagnosed within 6 years.
• Were not using insulin.
• Had a lower A1C at the start.
• Lost more weight and kept it off.

If you've had diabetes for 15 years and take insulin, remission is less likely. Better glucose, weight and fitness still lower your risk of complications, and that's worth the work. Results vary from person to person.

If my A1C is normal on a GLP-1, is my diabetes reversed?

Not by the 2021 definition. Remission is judged off all glucose-lowering medicine, so a normal A1C on a GLP-1 means your diabetes is well controlled.

GLP-1 receptor agonists and related medicines lower blood sugar and help many people lose weight. In the STEP 1 trial, people without diabetes who stopped semaglutide regained about two-thirds of the weight they had lost within a year. Most health measures moved back toward where they started. The study authors concluded that ongoing treatment was needed to keep the benefits. Whether to start, stay on or stop these medicines is a decision to make with your doctor.

What are the best virtual programs to reverse type 2 diabetes?

We can't rank them for you, and no honest program can promise remission. What the trials do show is what to look for.

DiRECT and Look AHEAD were run in person, but they had things in common that any program can copy. Medicines were reviewed and changed under medical supervision. People got regular support from trained staff for months, not a one-time handout. Weight loss was the main target, and A1C was checked along the way. Ask any program, online or not, how it handles each of these, and who you can reach if your sugar runs low.

Can I stop my diabetes medicine on my own?

No. Never stop or lower your diabetes medicine without your doctor.

In DiRECT, medicines were stopped on day one under medical supervision. That's because a very low-calorie diet plus insulin or a sulfonylurea can cause dangerous low blood sugar. Some other medicines, such as blood pressure pills, may also need adjusting as your weight drops. Your doctor can plan which medicines to reduce, in what order, and how to check your glucose while you do it.

What should I ask my doctor about remission?

• Given how long I've had diabetes and the medicines I take, is remission a realistic goal for me?
• How much weight loss would make a difference for me?
• Which of my medicines would need to change if I start a low-calorie or low-carb plan?
• How often should I check my glucose and A1C?
• Can I get help from a dietitian or a structured program?

See if a doctor-led programme could suit you (free check)

Last updated: 2026-10-30. Educational information, not medical advice. Talk to your doctor before changing your treatment.