Another reason why you really don't want to live a lifestyle that makes you overweight: "For individuals 65 years of age and older, obesity, excess body fat around the waist and gaining weight after the age of 50 are associated with an increased risk of diabetes. ... Adiposity [body fat] is a well-recognized risk factor for type 2 diabetes among young and middle-aged adults, however, the relationships between different measures of body composition and diabetes in older adults [65 years of age or older] are not well described ... [researchers] examined the relationship between measures of overall body fat, fat distribution, changes in these measures, and diabetes risk among 4,193 men and women 65 years of age and older. ... The researchers found that BMI at baseline, BMI at 50 years of age, weight, fat mass, waist circumference, waist-hip ratio, and waist-height ratio were all strongly related to the risk of diabetes. ... For each measure, there was a graded increase in the risk of diabetes with increasing quintiles of adiposity. Participants in the highest category of adiposity had an approximately 2- to 6-fold increased risk of developing diabetes compared with those in the lowest category."