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Promising New Male Contraceptive Passes First Human Safety Trial | And it's hormone-free.
A potential new male contraceptive drug has just undergone its first tests in human volunteers.
The participants were monitored for 15 days for any effects on normal hormone levels, inflammation (signs of cell damage), kidney and liver function, abnormal heart rhythms, sexual desire and mood. A vasectomy, which severs the tube connecting the sperm-producing testes to the rest of the male reproductive organs, is very effective (more than 99%) and safe – but it's not easily reversible and requires a minor operation. But a major trial testing this method was stopped early because of the hormonal side effects participants experienced, including mood swings, acne and changes to sex drive.
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