相关Couldyourbestfriendm的文学知识

问题详情：Couldyourbestfriendmakeyoufat?Researcherswhohavestudied“networks”ofobesity(肥胖)thinkso：theyfoundthatifsomeone'sfriendbecomesobese,thatperson'schancesofbecomingobeseincreasebymorethanhalf.B...