A safe and effective male birth control is edging closer to reality with new research pointing to an existing, temporary-acting drug’s potential. The challenge for developing male birth control has always been timing the drug's effect within sperm production. The drug blocks a key protein called BRDT that only turns on during sperm production. After three weeks of daily JQ1 injections, the male mice were infertile — unable to get females pregnant. Figure M shows that six weeks after stopping the drug, developing sperm cells had returned to normal levels.

Source: Daily Mail April 08, 2026 19:42 UTC