In all fairness, it's the fact that the person decreased his calories and lost weight which enabled his diabetes to go into remission.
The NHS in the UK are also doing a trial with overweight patients who are suffering with diabetes. Unfortunately, some people aren't overweight and still suffer with diabetes.
"Dieting for just eight weeks can reverse your diabetes," the Daily Mail reports. A small study of 30 people with type 2 diabetes found eight weeks on a very low calorie diet of around 600 to 700 calories a day, followed…
www.nhs.uk
The peer-reviewed Adventist Health Study 2 - a very large comparative study of the health of vegans, vegetarians, and omnivores - showed that vegetarians have a much lower incidence of type 2 diabetes compared to omnivores. Here is a summary of this study's findings relative to diabetes risk, with links
Study: Adventist Health Study-2, Loma Linda, California, USA
Number of participants: Approximately 96,000 participants in the U.S. and Canada
Findings, after 2 years:
1. Vegans had 0.38 (62% lower) incidence of type 2 diabetes than the omnivores in the study, when BMI was included in the risk equations.
2. Vegans had 0.51 (49% lower) incidence of type 2 diabetes, even when BMI was removed from the risk equations. This demonstrates that the vegan diet can reduce type 2 diabetes risk, even independently of body weight.
3. Vegetarians had 0.62 (38% lower) incidence of type 2 diabetes than the omnivores in the study, when BMI was included in the risk equations.
Links:
Vegetarian diets (vegan, lacto ovo, semi-) were associated with a substantial and independent reduction in diabetes incidence. In Blacks the dimension of the protection associated with vegetarian diets was as great as the excess risk associated with Black ethnicity.
www.ncbi.nlm.nih.gov
The Adventist Health Study 2 is a large cohort that is well suited to the study of the relation of vegetarian dietary patterns to health and disease risk. Here we review initial published findings with regard to vegetarian diets and several health outcomes. ...
www.ncbi.nlm.nih.gov
publichealth.llu.edu
It is difficult to get the word out effectively. In the United States, Kaiser Permanente (one of the largest health insurance companies in the U.S.), advised its physicians to recommend a whole-food plant-based diet to ALL their patients - especially those with diabetes, cardiovascular disease, hypertension, and/or obesity:
https://www.thepermanentejournal.org/issues/2013/spring/5117-nutrition.html . I'm not sure how much change this generated.