There are multiple types of diabetes, one of them being type 1. "The exact cause of type 1 diabetes is unknown. Most likely it is an autoimmune disorder. An infection or some other trigger causes the body to mistakenly attack the cells in the pancreas that make insulin. This kind of disorder can be passed down through families." [1] So how could taco and exercise cure this type of diabetes?
[1] http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001350/