Flegal et al. Reply

We thank Dr. Stevens for her observations (1). We agree with Stevens that standardized body mass index (BMI; weight (kg)/height (m)2) cutpoints can aid comparisons among studies examining different populations. The standard BMI cutpoints of 18.5, 25, and 30, indicating underweight (<18.5), normal weight (18.5–<25), overweight (25–<30), and obesity (≥30), were developed by the National Heart, Lung, and Blood Institute (2) and the World Health...