Genes and food. For the majority of diabetics (those with type 2), it's a combination of genetic predisposition and being overweight. It can also sometimes be causes by medications like steroids and some psych drugs, pancreatic surgery or pancreatitis. It's not entirely clear why people get type 1 diabetes.
Diabetes. Type 1 diabetes is an autoimmune disease in which your body's immune system attacks and destroys the cells of your pancreas that produce insulin. Type 2 diabetes is the more common kind which has to do with the balance between Insulin production by your pancreas and your body's sensitivity to insulin. Risk factors for type 2 include obesity, aging, sedentary lifestyle, poor eating and genes.
Blood sugar. Typically a blood sugar test is done, and two abnormal tests confirm the diagnosis. In adults for type 2 diabetes common tests are: hgba1c of 6.5% or greater; a fasting plasma glucose of > 125; a random glucose of 200 mg/dl or greater; or a 2-hour post-load glucose after 75 g oral glucose of 200 mg/dl or greater. Read more...