Researchers have reported a new non-hormonal male contraceptive pill that disrupts a particular protein involved in sperm formation. Tests in mice have so far been promising, showing effective prevention of pregnancy, reversibility within weeks, and no observable side effects.
Ever since the female contraceptive pill became available in the 60s, a male version has largely eluded scientists. Strides have been made in recent years, with topical gels or pills that disrupt testosterone or other hormones to reduce sperm development. But ideally these treatments would be non-hormonal, to reduce physiological or behavioral side effects.