translation.en: And, along with my collaborator, James Fowler, we began to wonder whether obesity really was epidemic and could it spread from person to person like the four people I discussed earlier.
translation.zh: 我与我的同事James Fowler 开始研讨肥胖症是否真的是一种流行病， 是否可以从一个人传染到另一个人身上， 就如我之前讨论的那四个人一样。