A study conducted in Saudi Arabia by Al Hayek et al. [83] included 93 individuals with diabetes to evaluate the glucometric changes in individuals with type 2 diabetes mellitus before, during, and after fasting for Ramadan showed that fasting during Ramadan may improve glucose levels in individuals with type 2 diabetes mellitus who are not receiving intensive insulin therapy, while exhibiting a relatively low occurrence of hypoglycemia. The gene discussed is INS; the disease is diabetes mellitus.