Researchers clearly found that the colourful Mediterranean Diet was better that the standard low fat diet recommended for prevention of, or treatment of Type-2 diabetes.
The research was conducted as a part of a large scale cardiovascular project – PREDIMED – amongst people with a high cardiovascular risk, and was a three arm randomized trial involving almost 500 people.
One group was given the standard doctor prescribed low fat diet, while one group used a Rainbow Diet with added olive oil, and the third used a Rainbow Diet with an added daily helping of nuts.
None of the participants had diabetes and all were between 55 and 80 years of age. The volume of olive oil was 1 litre per week. The nut amounts were 30 gms a day. Otherwise no control was placed on diet and no advice was given on exercise.
After a 4-year period, the incidence of diabetes was 10.0% for the added olive oil group, 11.1% for the added nut group and 17.9% for the control group. When the two groups on the Mediterranean diet were added together the risk of developing full diabetes was reduced by 52% over a low fat diet.