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Face it
The structure of a person's face also gives insight to fertility.
Estrogen caps bone growth in a woman's lower face and chin, making them relatively small and short, as well as the brow, allowing for her eyes to appear prominent, Thornhill explained. Men's faces are shaped by testosterone, which helps develop a larger lower face and jaw and a prominent brow.
Men and women possessing these traits are seen as attractive, Thornhill said, because they advertise reproductive health.
看得到
脸的结构也可以提供生育能力的一些信号。
雌性激素会抑制女性脸部下方和脸颊的骨骼生长，使得这两个部位相对较小、较短，额头部位也是如此，让她的眼睛更深邃。而男性的面孔则受到雄性激素的作用，帮助脸部下方和下巴的骨骼发育，并长出更突出的额头。
有这样特征的男女看起来更吸引人，Thornhill说，因为他们宣告着生殖健康。
