12. Researchers have spent decades and several millions of dollars studying diabetes among the Pima and Tohono O’odham tribes. Why hasn’t their research yielded a genetic explanation for the high rates of the disease?

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. 

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

c. establishing proper sleep hygiene