New Research on Male Birth Control Pill is Promising

For decades, the responsibility for birth control has fallen largely on women, but new research suggests a birth control pill for men might one day become a reality. How does it work? It targets a protein required for fertility, scientists report. The protein, called serine/threonine kinase 33 (STK33), is enriched in the testicles and is specifically required to create functional sperm, they explained. A drug that inhibits STK33, called compound CDD-2807, blocked the ability of male lab mice to fertilize female mice, researchers reported May 23 in the journal Science....