Full title: Effects of High vs Low Glycemic Index of Dietary Carbohydrate on Cardiovascular Disease Risk Factors and Insulin Sensitivity @ http://jama.jamanetwork.com/article.aspx?articleid=2040224
Conclusions and Relevance In this 5-week controlled feeding study, diets with low glycemic index of dietary carbohydrate, compared with high glycemic index of dietary carbohydrate, did not result in improvements in insulin sensitivity, lipid levels, or systolic blood pressure. In the context of an overall DASH-type diet, using glycemic index to select specific foods may not improve cardiovascular risk factors or insulin resistance.
Here's is Dr David Katz's thoughts on this trial:
http://health.usnews.com/health-new...rial-reductionism-revelations-and-resolutions
A second implication is that carbohydrate is not the be-all, end-all when it comes to insulin sensitivity. With all the ranting these days about the insidious evils of carbohydrate, this may seem surprising; but it, too, is a long-established fact. Consumption of protein triggers insulin release, generally more so than does carbohydrate. The lower-carbohydrate assignments in OmniCarb were higher in protein, and effects of the latter on insulin requirements may have more than offset the former.
Conclusions and Relevance In this 5-week controlled feeding study, diets with low glycemic index of dietary carbohydrate, compared with high glycemic index of dietary carbohydrate, did not result in improvements in insulin sensitivity, lipid levels, or systolic blood pressure. In the context of an overall DASH-type diet, using glycemic index to select specific foods may not improve cardiovascular risk factors or insulin resistance.
Here's is Dr David Katz's thoughts on this trial:
http://health.usnews.com/health-new...rial-reductionism-revelations-and-resolutions
A second implication is that carbohydrate is not the be-all, end-all when it comes to insulin sensitivity. With all the ranting these days about the insidious evils of carbohydrate, this may seem surprising; but it, too, is a long-established fact. Consumption of protein triggers insulin release, generally more so than does carbohydrate. The lower-carbohydrate assignments in OmniCarb were higher in protein, and effects of the latter on insulin requirements may have more than offset the former.