There is no permanent cure for diabetes, but Type 2 diabetes can go into remission, and experimental therapies for Type 1 diabetes are showing early promise. The distinction matters: a cure would mean the disease is gone for good, while remission means blood sugar stays in a normal range without medication, sometimes for years, but can return.
Why Doctors Say “Remission” Instead of “Cure”
The American Diabetes Association defines Type 2 diabetes remission as maintaining an HbA1c below 6.5% for at least three months without any glucose-lowering medications. That threshold is the same number used to diagnose diabetes in the first place, so remission essentially means your blood sugar no longer meets the criteria for the disease.
The reason this isn’t called a cure is that the underlying vulnerability doesn’t disappear. The insulin resistance and reduced beta cell function that caused diabetes in the first place can reassert themselves, especially if weight is regained or other risk factors return. A large retrospective study across six U.S. health systems found that about 37% of people who achieved remission eventually relapsed within three years.
Type 2 Remission Through Weight Loss
The strongest evidence for Type 2 remission comes from significant, sustained weight loss. In the landmark DiRECT trial from the UK, participants who maintained more than 15 kg (about 33 pounds) of weight loss had remission rates above 80% at both one and two years. Those who kept off more than 10 kg (22 pounds) saw remission rates around 75%. The pattern is clear: the more weight lost and maintained, the better the odds.
That said, the real-world remission rate is much lower. In the large U.S. health systems study, only 2.9% of adults with Type 2 diabetes achieved remission over three years. The gap between clinical trials and everyday life reflects how difficult sustained weight loss is without the intensive support structure of a research program.
Who Has the Best Odds
Not everyone with Type 2 diabetes has an equal shot at remission. Three factors stand out as the strongest predictors. First, people who weren’t yet taking glucose-lowering medications had dramatically higher odds of remission compared to those on three or more medications. Second, those with a baseline HbA1c already below 7% had about three times the odds of remission compared to those above 11%. Third, diabetes duration mattered significantly: people diagnosed less than a year ago had roughly 2.6 times the odds of remission compared to those who’d had diabetes for four or more years.
The takeaway is that early, aggressive action offers the best window. The longer diabetes has been present and the more medication needed to control it, the harder remission becomes. This likely reflects progressive loss of the insulin-producing beta cells in the pancreas over time.
Bariatric Surgery and Newer Medications
Bariatric surgery remains the intervention with the highest remission rates for Type 2 diabetes, particularly in people with obesity. Procedures that alter the digestive tract appear to improve blood sugar control through mechanisms beyond just weight loss, including changes in gut hormones that affect insulin production. Remission rates vary by procedure and patient, but they consistently outperform lifestyle interventions alone.
The newer class of weight loss medications (GLP-1 receptor agonists) can produce substantial weight loss and improve blood sugar dramatically. However, because remission is defined as being off all glucose-lowering medications, people who rely on these drugs to maintain their weight loss technically don’t qualify for remission while taking them. If the medication is stopped, weight often returns, and blood sugar rises with it.
Type 1 Diabetes: No Remission, but New Approaches
Type 1 diabetes is a fundamentally different disease. The immune system destroys the beta cells that produce insulin, and once those cells are gone, the body cannot make its own insulin at all. There is no lifestyle change that can reverse this, and no current treatment restores the body’s ability to regulate blood sugar permanently.
Islet cell transplantation, where insulin-producing cells from a donor pancreas are infused into a patient, has been studied for decades. With the best immune-suppressing drug combinations, about 50% of recipients remain insulin-independent at five years, comparable to rates seen with whole pancreas transplants. The catch is that recipients must take immunosuppressive drugs for life to prevent rejection, and the supply of donor cells is extremely limited.
Stem Cell-Derived Islet Cells
The most exciting development for Type 1 diabetes is the creation of insulin-producing cells from stem cells in a lab, which could solve the supply problem. An experimental therapy called VX-880, developed by Vertex Pharmaceuticals, uses stem cell-derived islet cells that are fully differentiated, meaning they’re designed to function like natural pancreatic cells. In early clinical trial results, the first two patients infused at half the target dose had restored insulin production and improved blood sugar control. One of those patients achieved insulin independence, maintaining an HbA1c at or below 7% without any injected insulin.
These are very early results from a small number of patients, and the therapy still requires immunosuppression. But they represent the first time stem cell-derived islet cells have demonstrated the potential to free a Type 1 patient from insulin injections in a clinical trial. If the approach scales and if researchers can eventually eliminate the need for immunosuppressive drugs (through gene editing or encapsulation devices that shield the cells from the immune system), it would be the closest thing to a functional cure for Type 1 diabetes.
What “No Cure” Actually Means Day to Day
For people with Type 2 diabetes, the absence of a cure doesn’t mean the situation is hopeless. Remission is a realistic goal for some, especially those diagnosed recently with milder blood sugar elevations. Even for those who don’t achieve full remission, significant weight loss and lifestyle changes can reduce medication needs, lower the risk of complications, and meaningfully improve quality of life. The disease exists on a spectrum, and moving in the right direction on that spectrum has real health benefits even if your HbA1c doesn’t drop below the remission threshold.
For people with Type 1 diabetes, management tools have improved enormously. Continuous glucose monitors, automated insulin delivery systems, and faster-acting insulin formulations have made it possible to maintain tighter blood sugar control with less daily burden than ever before. These aren’t cures, but they’ve changed what living with Type 1 looks like in practical, meaningful ways while the science of cell replacement continues to advance.