BACKGROUND To evaluate prospectively the relationship between white, or whole grain bread, and glycemic index, or glycemic load from diet and weight change in a Mediterranean cohort. METHODS We followed-up 9 267 Spanish university graduates for a mean period of 5 years. Dietary habits at baseline were assessed using a semi-quantitative 136-item food-frequency questionnaire. Average yearly wei...

In this issue of Diabetes Care, Liese et al. (1) report on the relation of dietary glycemic index, glycemic load, carbohydrate, and fiber intake to measures of insulin sensitivity, insulin secretion, and adiposity in the Insulin Resistance Atherosclerosis Study (IRAS). The evaluation was confined to those with normal or impaired glucose tolerance and did not include diabetic individuals. As the...

I am a second year Nutrition student and have a question about protein and endurance athletes. Why are their protein requirements greater than they are for resistance athletes? Is it because the muscle glycogen stores get depleted over a long period of time with intense exercise? If so, should they consume more carbohydrates than resistance athletes, with a low glycemic index prior to their wor...