Adopting a colourful Mediterranean diet (a Rainbow Diet) helps prevent type-2 diabetes, and also improves glycaemic control and cardiovascular risk in persons with established diabetes, according to a 2009 meta-analysis.
A Rainbow Diet can even reverse early type-2 diabetes
Over the seventeen studies used in the meta-analysis(1), two large prospective studies report a substantially lower risk (83% and 35%, respectively) of type 2 diabetes in healthy people, or in early diagnosed patients, with those people showing the highest adherence to a colourful Mediterranean diet (a Rainbow Diet). Five randomised, controlled trials showed improvement of fasting glucose and HbA1c levels while not one study reported a worsening of glycemic control with a Mediterranean diet.
Two controlled trials in a secondary prevention setting demonstrated that diabetic patients also received cardiovascular benefits from a Mediterranean diet.
The researchers concluded, “The evidence so far accumulated suggests that adopting a Mediterranean diet may help prevent type 2 diabetes, and also improve glycaemic control and cardiovascular risk in persons with established diabetes”.
In another 2009 study(2), a low carbohydrate Mediterranean Diet was found to improve cardiovascular risk factors and diabetes control amongst overweight patients with type-2 diabetes
2. Elhayany, Lustman et al; 22 Sept, 2009