What explains increasing obesity? .Theory 3:Food price trends Since WWIl,improvements in the technology of agriculture have made food production substantially cheaper and driven down its price. The law of demand says that a decline in the price of a normal good will be met with an increase in the quantity consumed of that good-and people have responded to these price decreases just as expected. While some have pointed to rising portion sizes at meals as a cause of rising body weight,those rising portions are themselves a consequence of falling food prices. Bhattacharya,Hyde and Tu-HealthEconomics Bhattacharya, Hyde and Tu – Health Economics What explains increasing obesity? • Theory 3: Food price trends • Since WWII, improvements in the technology of agriculture have made food production substantially cheaper and driven down its price. • The law of demand says that a decline in the price of a normal good will be met with an increase in the quantity consumed of that good—and people have responded to these price decreases just as expected. • While some have pointed to rising portion sizes at meals as a cause of rising body weight, those rising portions are themselves a consequence of falling food prices