For women, nothing's like the smell of men's sweat | Reuters

For women, apparently there's nothing like the smell of a man's sweat.

Does Your Sweat Turn Women On? - T NATION

For example, the pheromone androstenone isn't the same as androstenol. Fresh man-sweat produces a scent of androstenol, which is attractive to women. But after 20 minutes or so, that sweat gets oxidized. Now it's just body odor. So, fresh sweat good, old sweat bad. Men with higher levels of testosterone give off more of these pheromones.

Manly Sweat Makes Other Men More Cooperative - Science | AAAS

Take a whiff, men. A chemical component of other guys' sweat makes men more cooperative and generous, new research says. The study is the first to show that this pheromone, called androstadienone, influences other men's behavior and reinforces the developing finding that humans are susceptible and responsive to these chemical signals.

Varying Sweat Scents Are Noted by Women - The New York Times

More than half of men over 40 will experience some kind of erectile problem, and the prevalence increases with age (though men in their 20s and 30s can be affected, too). Here's what to do about it.