Among the pima indians of arizona, of adults have type 2 diabetes.

A link between cardiometabolic risk factors and race and ethnicity have been studied. It has been found that the rates of cardiometabolic risk factors are higher among ethnic minority populations such as African Americans, Hispanic Americans, and Native Americans. 

Among the Pima Indians of Arizona, one-half or 50% of all the adults have been found to have type 2 diabetes. 

Source: An Invitation to Health: Build Your Future (15th Edition) by Dianne Hales (2013)