Diabetes mellitus most common cause?

Diabetes is a multi factorial disease.

Type1 is generally auto - immune mediated.

Type2 Diabetes has a number of factors involved. The following are more probe to Type2 diabetes:

Family History of Diabetes

Overweight

Sedentary Life Style

Excessive simple sugar in diet

Comorbidities such as Thyroid disorders

Medication for Hypertension will sometimes unmask Diabetes