Аннотация:MORTALITYdifferences between weight categories has sometimes been described as controversial. 1 The appearance of controversy may arise in part because studies of body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) and mortality have used a wide variety of BMI categories and varying reference categories, which can make findings appear more variable than when standard categories are used and also can make it difficult to compare and synthesize studies.A report 2 in 1997 from the World Health Organization Consultation on Obesity defined BMI-based categories of underweight, normal weight, preobesity, and obesity.The same cutoff BMI values were adopted by the National Heart, Lung, and Blood Institute in 1998. 3n this study, we used the National Heart, Lung, and Blood Institute's
