Typically they also consist of high carbohydrate diets that feed yeast and other unwanted organisms in our bodies. (drjockers.com)
They are able to eat very high carbohydrate diets and the reason why is they live in a strong UV and IR environment. (justinhealth.com)
In animal studies, high carbohydrate diets in rats leads to an increase in insulin production (and probably leptin, although that wasn't studied). (progressivehealth.com)