Dietary Carbohydrates And Insulin

In normal subjects a high carbohydrate low gi breakfast meal reduced free fatty acids by reducing the undershoot of plasma glucose whereas low carbohydrate breakfasts increased postprandial free fatty acids.

Dietary carbohydrates and insulin. Total carbohydrates dietary fiber total sugars dietary gi and gl were calculated from 24 h recalls. The lack of con sistency in the insulin sensitivity at the two levels of plasma insulin is confusing. Dietary carbohydrates may affect insulin action at least in part via alterations in plasma free fatty acids. Dietary guidelines advisory committee meeting june 16 18 1999 ilsi research foundation.

The balance of evidence suggests that a high fat diet is likely to reduce insulin sensitivity but the effects of dietary carbohydrates are more controversial. According to the carbohydrate insulin model high carb diets and elevated insulin levels are responsible for this metabolic adaptation. Because insulin directs fatty acids out of the blood toward fat cells and away from more metabolically active tissues like muscle the result is a decreased metabolic rate. Extensive studies in animals showed a detrimental effect of diets very high in fructose or sucrose particularly in association with induction of hypertriglyceridemia.