Medical research

Low testosterone raises risk of age-related functional disability

Elderly men with low levels of testosterone or other sex hormones have twice the likelihood of having declining physical function over two years' time compared with their peers who have the highest hormone levels, a new study ...

Psychology & Psychiatry

A woman's face drives relationship length: study

Men looking for a quick fling prefer women with more "feminine" facial features, said a study Friday that delved into the evolutionary determinants of the mating game.

Medical research

Naturally occurring hormone induces egg maturation

The naturally occurring hormone kisspeptin effectively induces egg maturation during infertility treatment, according to a clinical in vitro fertilization (IVF) study. The results were presented Monday at The Endocrine Society's ...

Health

Women altering menstruation cycles in large numbers, study shows

A surprisingly large number of women 18 or older choose to delay or skip monthly menstruation by deviating from the instructions of birth-control pills and other hormonal contraceptives, a team of University of Oregon researchers ...

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