1. Compared to men who were never overweight, those overweight at age 7 who returned to a normal body mass index (BMI) by age 13 had no increased risk for developing type 2 diabetes.
2. Men overweight at age 13 who returned to normal weight by adulthood had an increased risk of type 2 diabetes greater than those who were never overweight, but less than men persistently overweight into adulthood.
Evidence Rating Level: 2 (Good)