A male contraceptive that works by deforming sperm could available within just a few years, if tests on men go well. This fast track development is possible because the drug is already licensed for use in treating a rare genetic disorder in people, called Gaucher’s disease.

The drug is taken as a pill, not injected, and it could have fewer side effects than experimental hormonal male contraceptives, which include a cocktail of hormones designed to suppress sperm production while maintaining normal testosterone levels.
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