What explains increasing obesity? Theory 1:Genetics Evidence suggests that genetics plays a key role in determining body weight for both children and adults. While genetics may predispose some to being heavy,they cannot be the reason for the rise in body weight. Bhattacharya,Hyde and Tu-HealthEconomics Bhattacharya, Hyde and Tu – Health Economics What explains increasing obesity? • Theory 1: Genetics • Evidence suggests that genetics plays a key role in determining body weight for both children and adults. • While genetics may predispose some to being heavy, they cannot be the reason for the rise in body weight