In 2006 this randomised study of 99 type 2 diabetic participants, two diets were implemented. Group 1 or 49 participants consumed a low fat vegan diet. Group 2, 50 participants consumed the recommended ADA (American Diabetes Association) diet.It was found that both diets were associated with significant clinical improvements however it was also clearly shown that a vegan diet was more effective in reducing medications. 43% of the vegan group were able to reduce medications whilst only 26% of the ADA group were able to achieve a reduction in medication.
Over the duration of the study the vegan group reduced on average body weight by 5.8kg and the ADA group by 4.3kg.
It was also shown that a low fat plant based diet may affect insulin sensitivity.
The study concluded that, in individuals with type 2 diabetes participating in a 22-week clinical trial, both a low-fat vegan diet and a diet following ADA guidelines improved glycemic control; however, the changes were greater in the vegan group. Further research is necessary to establish longer-term diet effects and sustainability.