Anyone aged 35 to 70 with overweight or obesity should get screened for type 2 diabetes or prediabetes every three years, says the U.S. Preventive Services Task Force. Doctors should consider screening American Indians/Alaska Natives, Blacks, Hispanics/Latinos, and Hawaiians/Pacific Islanders at even younger ages, because those groups have a higher risk, said the task force. Ditto for Asian-Americans in the upper half of the “normal” weight range, anyone who had gestational diabetes, or anyone with polycystic ovarian syndrome or a family history of diabetes.