Low-fat vegan diet improves blood sugar in type 2 diabetes
Eat as much as you want, but keep it plant-based and low-fat. For people with type 2 diabetes, this approach produced better results than expected. Participants spontaneously ate fewer calories without being told to count them.
Type 2 diabetes is a metabolic disorder in which the body becomes less responsive to insulin. Fat accumulating in the liver and muscles (ectopic fat, meaning fat stored outside its normal sites) plays a central role. Standard dietary advice usually requires calorie restriction, which many people struggle to maintain.
A new clinical trial, published in BMJ Open Diabetes Research & Care and conducted in collaboration with the Yale School of Medicine, tried a different approach. Participants could eat freely from a low-fat, plant-based menu of vegetables, grains, legumes, and fruit. Animal products and added fats were excluded entirely.
Less fat, without counting
The 25 participants, averaging 59 years of age and living with diabetes for about 6.6 years, followed the diet for 16 weeks. Despite eating freely, they reported consuming an average of 346 fewer calories per day. They lost an average of six kilograms. Liver fat, muscle fat, and visceral fat all decreased. Levels of advanced glycation end-products (AGEs) in the skin also dropped, as the study reports. AGEs are compounds formed when sugars bind to proteins, and they are associated with accelerated tissue damage over time.
This is also the first study to simultaneously measure liver fat, muscle fat, visceral fat, and skin AGEs within a single plant-based dietary intervention in people with type 2 diabetes, the researchers note.
What this means for aging and metabolism
From a longevity perspective, this is worth watching. Type 2 diabetes accelerates biological aging through several pathways, including chronic inflammation and ectopic fat accumulation. A diet that appears to dampen those processes without formal restrictions offers a potentially accessible approach. The trial was small and lasted only 16 weeks. Larger and longer studies are needed to confirm these findings.
Search terms to explore further: ectopic fat insulin resistance | advanced glycation end-products skin | plant-based diet type 2 diabetes metabolism