Large-breasted, narrow-waisted women have the highest reproductive potential, according to a new study, suggesting western men’s penchant for women with an hourglass shape may have some biological justification.

Women with a relatively low waist-to-hip ratio and large breasts had about 30 per cent higher levels of the female reproductive hormone estradiol than women with other combinations of body shapes, found Grazyna Jasienska, at Jagiellonian University in Krakow, Poland and colleagues.



Two of the team, Peter Ellison and Susan Lipson at Harvard University in the US, have previously shown that higher levels of estradiol are indeed related to higher fertility in women trying to get pregnant.



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