CANYONVILLE -- The Cow Creek Band of Umpqua Tribe of Indians is taking on an effort to prevent diabetes among tribal members.The Cow Creeks, along with the Coquille and Klamath tribes, received a $2.2 million grant from the U.S. Department of Health and Human Services' Indian Health Service to help prevent type 2 diabetes, a disease where people either do not produce enough insulin or they do not use the insulin their bodies make. The majority of people who have this disease are overweight and for some unknown reason, Native Americans are more susceptible to becoming diabetic, said Jeff Bentley …