The DiRECT trial (Diabetes Remission Clinical Trial), published in The Lancet in 2018 and followed through 2-year outcomes, demonstrated that intensive dietary intervention producing significant weight loss achieved type 2 diabetes remission in 46 percent of participants at 12 months and 36 percent at 24 months, without diabetes medication. At 15 kilograms of weight loss, 86 percent of participants achieved remission. This fundamentally changed the medical framing of type 2 diabetes as a progressive, irreversible condition.
How Diabetes Remission Occurs Through Diet
Type 2 diabetes is caused by excess fat deposition in the liver and pancreas that impairs hepatic insulin sensitivity and pancreatic beta-cell function respectively. Roy Taylor's twin cycle hypothesis, which underpins the DiRECT trial, proposes that reducing caloric intake sufficiently to deplete hepatic and pancreatic fat stores allows both the liver and pancreas to return to near-normal function. This is not achieved through medication. It is achieved through reduced energy intake from whole food dietary change.
The Mediterranean Diet in Early Diabetes
For adults with early type 2 diabetes or prediabetes who do not require dramatic weight loss, the Mediterranean diet has specific evidence. A 4-year trial found that a Mediterranean diet without calorie restriction reduced progression from prediabetes to type 2 diabetes by 52 percent compared to a control diet, with significant improvements in fasting glucose, HbA1c, and insulin sensitivity.