Why america has to be fat?(Yuting Huang)

As we all know, many of american people are overweight or obese, "the obesity problem is really a side effect of things that are good for the economy" Tomas said who is an economics professor and studies obesity at the university of Chicago. And american people like eat many kinds food can make people be fatter, we always call those food "junk food" like the potato chip, McDonald's, Friday's and so on. American people spend a lot of money on the food. Then, they be fatter than before, so they choose lose weigh. They buy the diet books and medical, go to GYM. Some economists say this is the fat economy. One way, people spend money be fat, other way, people spend money lose weight.