From BBC News:
A study led by the University of Southampton found breast cancer rates were more than three times higher among women whose mothers had wide hips.
Rates were more than seven times higher if those mothers had already given birth to one or more children.
The researchers said their work supported the hypothesis that wide, round hips reflect high levels of sex hormone production at puberty, which continue into adult life, and impact on the embryo during pregnancy.
...breast cancer risk may be raised for a daughter during the first weeks of pregnancy if the embryo's developing breast tissue are exposed to particularly high levels of oestrogen circulating in the mother's blood.
That's bad news for a lot of women, but especially those in developing countries, where 70% of future breast cancer cases are expected to arise, as TIME's new cover story explains.
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