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You have a higher risk for diabetes if you have any of the following:

• Age greater than 45 years
• Diabetes during a previous pregnancy
• Excess body weight (especially around the waist)
• Family history of diabetes
• Given birth to a baby weighing more than 9 pounds
• HDL cholesterol under 35mg/dL
• High blood levels of triglycerides, a type of fat molecule (250 mg/dL or more)
• High blood pressure (greater than or equal to 140/90 mmHg)
• Impaired glucose tolerance
• Low activity level (exercising less than 3 times a week)
• Metabolic syndrome
• Polycystic ovarian syndrome
• A condition called acanthosis nigricans, which causes dark, thickened skin around the neck or armpits

Persons from certain ethnic groups, including African Americans, Hispanic Americans, Asian Americans, and Native Americans, have a higher risk for diabetes.

Everyone over 45 should have a blood sugar (glucose) test at least every 3 years. Regular testing of blood sugar levels should begin at a younger age, and be performed more often if you are at higher risk for diabetes.

See: Type 2 diabetes

Risk factors for Type 2 diabetes; Diabetes risk factors

American Diabetes Association (ADA). Standards of Medical Care in Diabetes—2009. Diabetes Care. January 2009; 32:S13-S61.

In the clinic. Type 2 diabetes. Ann Intern Med. 2007;146:ITC-1-15.

American Diabetes Association (ADA). Standards of medical care in diabetes. IV. Prevention/delay of type 2 diabetes. Diabetes Care. 2007;30:S7-S8.

Inzuchhi SE and Sherwin RS. Type 2 diabetes mellitus. In: Goldman L and Ausiello D, eds. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 248.

Updated by: Reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. Also reviewed by Deborah Wexler, MD, Assistant Professor of Medicine, Harvard Medical School, Endocrinologist, Massachusetts General Hospital.