One diet consisted in a high-carbohydrate diet consisting of 55 per cent of calories as carbohydrate, 30 percent as fat, and 10 percent as monounsaturated fat. The other diet consisted in a high-monounsaturated fat diet deriving 40 percent of calories from carbohydrate, 45 percent from fat, and 25 percent from monounsaturated fat.
The research compared the effect of two same-calorie diets among 42 patients with type 2 diabetes, who consumed each diet for 6 weeks, with about 1 week between the two periods. These patients were invited to continue the second diet for 8 weeks more. Eightof them continued on the high-monounsaturated fat diet and 13 continued on the high-carbohydrate diet.