Findings of the new meta-analysis say that replacing carbohydrate and saturated fats with healthy fats like polyunsaturated fats may lower blood sugar level and improve insulin control.
Researchers looked at data from 4,660 adults that had been collected by 102 studies. In randomized, controlled trials, the patients were given meals containing various types and quantities of carbohydrate and fat.
Researchers examined how variations in their diets influenced measure of metabolic health and how saturated, monounsaturated and polyunsaturated fats and carbohydrates affect the development of type 2 diabetes.
Results of this analysis suggest that eating foods rich in monounsaturated fat or polyunsaturated fat had a positive effect on blood glucose control compared to consumption of dietary carbohydrate or saturated fat.
More information here.