Wheat

In this study conducted at Lund University in Sweden, mice were fed whole grain diets based on either wheat or rye, for 22 weeks. Body weight, glucose tolerance, and several other parameters were measured during the study. The researchers concluded that whole grain rye “evokes a different metabolic profile compared with whole grain wheat.” Specifically, mice consuming the whole grain rye had reduced body weight, slightly improved insulin sensitivity, and lower total cholesterol.
Nutrition. February 2010; 26(2): 230-9. Epub 2009 Jul 31.