New pill temporarily paralyzes sperm cells: really a step closer to contraception for men?

“The approach they describe here, to knock out a protein critical to sperm motility, is a revolutionary idea. The fact that it works so quickly and can be reversed so quickly is really quite exciting.” “Really very exciting”, literally translated. The pun is not ours.

“If the results in mice can be replicated in humans, this could be the male contraceptive we’ve been looking for,” says Pacey. Although in practice it will take several years before such a pill actually comes on the market.