 The results of this study suggest that body mass index, BMI, may not be the best indicator of body fatness in certain populations. In particular, it appears to be more accurate in younger adults, women, and the United States population, while being less accurate in older adults, Korean populations, and those with higher levels of body fatness. This article was authored by Soo Min It Jong, Dong Hoon Lee, Leandro FM Resend and others.