We investigate the relationship between changes in socioeconomic factors and the emerging coexistence of under and overweight among adults in China during 1991-2000. Our key questions are: (1) whether any socioeconomic factor explains both increasing overweight (Body Mass Index (BMI)less than or...

More than one billion adults are overweight worldwide, and more than 300 million of them clinically obese, raising the risk of many serious diseases. Only 3.6 percent of Japanese have a body mass index (BMI) over 30, which is the international standard for obesity, whereas 32.0 percent of...