Population-based studies on Weight Fluctuation and Health in Japan : Definition of Weight Fluctuation and Problems in Method

Abstract

This article reviews population-based studies on weight fluctuation in humans. Review shows several challenges in method of these studies. Recommendation for method in population-based studies are as follows. 1. There is not yet established definition of weight fluctuation. Definite definition should be established and unified. 2. Body weight should be measured by using more reliable scale. 3. Standard for assessing magnitude, direction and pattern of weight fluctuation should be unified. 4. Period of measurement of body weight should be made shorter. 5. Large cohort studies of both sexes and a wide range of age should be conducted. 6. Duration of observation should be made longer.