http://www.philly.com/philly/health/...l_for_men.html
I can't see this being a marketing success.In a nutshell, here's what's new: Most efforts to develop a male contraceptive use testosterone, but there are side effects: moodiness, which causes researchers to worry, or testicular shrinkage, which causes marketers to despair.
Also, men make sperm until the day they die, so any method may be used far longer than women's birth control. (Quick round of applause for menopause.) Finally, any method's effect has to be reversible.
"There's always been a hormonal approach to a male pill, like the woman's pill, which made people think a solution was just around the corner," Georg said. "But ours is a non-hormonal approach."
Georg's explanation calls to mind those sex education movies showing thousands of tiny shimmying sperm around a gigantic egg. It's not that the sperm are shimmying as much as whirling their tales in a circular motion, "like a drilling movement," she said. "What we're doing is trying to slow them down. It's a particularly nice way of thinking about it - immobilizing the sperm."


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