Unintended consequences for male birth control injection

Birth control shots for men are effective at stopping pregnancy in female partners but the side effects leave a lot to be desired.

These are the primary findings from a prospective study, carried out by the World Health Organization in Geneva that tested the safety and effectiveness of injectable contraceptives in 266 healthy men.

Participants were given intramuscular injections of 200mg norethisterone enanthate combined with 1000mg testosterone undecanoate, administered every eight weeks over 12 months.

While the injections led to near-complete and reversible