人类学家历来认为,与男性相比,女性因更多负责做饭、经常不停咀嚼而牙齿更差。但美国媒体援引一份新研究报告说,女性牙齿差与人类进入农耕社会后女性怀孕次数增多有关。俄勒冈大学人类学家约翰.卢卡契奇通过研究有关当代和史前人类牙齿状况的记录发现,尽管男性因不像女性 Anthropologists have always believed that women tend to chew teeth more often than men because they are more responsible for cooking. However, a new study was quoted by the U.S. media as saying that poor female teeth are associated with an increase in the number of pregnancies among women after they entered farming. John Lukacic, an anthropologist at the University of Oregon, who studies the dental condition of contemporary and prehistoric humans, found that although men are less likely to be women than women