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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
臉的結構也可以提供生育能力的一些信號。
雌性激素會抑制女性臉部下方和臉頰的骨骼生長，使得這兩個部位相對較小、較短，額頭部位也是如此，讓她的眼睛更深邃。而男性的面孔則受到雄性激素的作用，幫助臉部下方和下巴的骨骼發育，并長出更突出的額頭。
有這樣特征的男女看起來更吸引人，Thornhill說，因為他們宣告著生殖健康。
