The long-running mystery of why birds seemingly change sex

It's not often you do a search on a scientific subject and come up with a journal from 1888, but people were puzzled by this mystery for a while: Female birds, usually once they've reached a sufficiently advanced age, can suddenly grow male plumage and take on male behaviors.

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A baby's cuteness is determined by your reproductive hormones

If you're tying to figure out how cute a baby is, you had better ask a premenopausal woman: they're scientifically proven to have the highest cuteness sensitivity. Yes, this experiment involved coming up with an objective scale of baby cuteness.

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Handheld Device Electrifies Your Breast Tissue, Diagnoses Cancer Risk

Soon, you could be determining your breast cancer risk with a simple needle jab, to collect a small amount of tissue — which doctors would electrify and subject to weird chemicals, before extracting the estrogen for analysis.

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Testosterone May Be A Cure for Worst Effects of Menopause

tbottle.jpg Although thousands of women take estrogen replacement therapy (ERT) to avoid the unpleasantness of menopause, study after study has shown that ERT may shorten life. But today researchers announced results from a study of testosterone therapy that suggested the substance known as T may become a crucial ingredient in…

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Crackdown on Black Market Hormones

hormone.JPGHormones are the new recreational drugs, helping you maintain that zippy youthful feeling even into your 60s and letting you grow cool secondary sex characteristics your own hormones won't. For those reasons, estrogen is one of the hottest black market hormones. Menopausal women and transsexuals denied estrogen therapy …

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