Men1 gene deletion also reverses pre‐existing hyperglycemia in high fat diet (HFD)‐induced diabetic mice as well as in obese (db/db) mice (Schnepp et al,2006; Yang et al,2010a; Yang et al,2010b) and ameliorates gestational diabetes in pregnant mice (Karnik et al,2007). Here, MEN1 is linked to Hyperglycemia.