Obesity is defined as a body mass index bmi of quizlet July 8, 2019 16 32 64 128 Body mass index (bmi) is the only measure of obesity. quizlet Body mass index is one way to estimate quizlet Quizlet obesity is defined as a bmi or body mass index greater or equal to 30 Body mass index is best used to classify the health risks associated with body weight. quizlet