You probably know how the advice around diabetes can start to sound the same. Watch the portions, count the carbs, log every plate. Food can turn into a math problem.
Now a 16-week clinical trial, published October 8, 2026 in BMJ Open Diabetes Research & Care, has set that math aside.
Adults with type 2 diabetes switched to a low-fat plant-based diet and ate as much as they wanted of vegetables, whole grains, legumes and fruit.
At the end, the fat packed inside their livers had dropped by roughly a third, and the body's response to insulin had improved.
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What the 16-week plan looked like
The trial, run by researchers at the Physicians Committee for Responsible Medicine with the Yale School of Medicine, enrolled 25 adults with type 2 diabetes. Twenty-four completed the 16 weeks.
Their diet was about 75 percent carbohydrates, 15 percent protein and 10 percent fat. No calorie counting. No portion limits. The food was plant-based.
On average, participants lost 6 kilograms, about 13 pounds. Liver fat fell by 33 percent. Deep belly fat, the kind that sits around the organs, shrank by 290 cubic centimeters.
Long-term blood sugar, measured as HbA1c, dropped by 1 percentage point. Total cholesterol and LDL cholesterol also fell. Markers of how the pancreas releases insulin improved as well.
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Liver fat matters in type 2 diabetes
Fatty liver is common in people with type 2 diabetes and often goes unnoticed, because it rarely causes obvious symptoms early on.
The extra fat sitting inside liver cells is a key driver of insulin resistance, meaning the body's cells respond less to the hormone that lowers blood sugar.
Shrinking that fat tends to pull the whole metabolic picture in a better direction, which is what the scans in this trial captured.
The Physicians Committee for Responsible Medicine ran the trial. Its researchers say the pattern adds to growing evidence that food can work like medicine for people with diabetes.
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What the study cannot tell us
The design has limits. This was a small, single-arm trial without a control group, so it cannot prove the diet alone caused the changes. Larger randomized trials are needed to confirm the effect.
Anyone with type 2 diabetes considering a major shift in diet should talk with their doctor first. Blood sugar and blood pressure medications may need to be adjusted when weight and blood sugar drop quickly.
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This article is made and published by Ida-Marie Palm Varbæk, who may have used AI in the preparation.