Pick Pik/Creative Commons photoA biotech startup said its male contraceptive was effective for at least two years, following a clinical trial. Almost all existing birth control options are for women, but several groups have been researching ways of making men temporarily infertile. The new technique, ADAM, involves injecting men with a water-soluble gel to block the vasa deferentia, the tubes which carry sperm from the testicles. The trial was small, but participants reported no significant side effects. Around 10% of US women of childbearing age use long-term contraceptives such as IUDs, suggesting that a significant percentage of men might do likewise, Gizmodo reported, although one scientist warned that there was no long-term data on the effects of blocking the vasa deferentia. |