Meiosis-Blocking Drug Shows Non-Hormonal Path to Male Birth Control in Mice

Cornell researchers showed that the non-hormonal drug JQ1 can temporarily halt sperm production by blocking meiosis in male mice, with fertility returning and offspring normal after stopping treatment. While JQ1 itself is unlikely to be developed due to side effects and short half-life, the study provides a proof of concept for non-hormonal male birth control and underscores multiple other candidates and approaches in the field seeking long-lasting, non-hormonal options.