Viagra may harm men's fertility, report warns
Extract from the Sunday Telegraph:
"The anti-impotence drug Viagra could harm men's fertility, scientists have warned.
New research suggests that the drug can damage sperm and so prevent some men from starting a family.
The findings mean that young men who take the drug recreationally could be damaging their chances of starting a family.
Likewise, fertility clinics that prescribe the drug to help men produce sperm could be preventing couples from getting pregnant.
The research was led by Dr David Glenn, a consultant gynaecologist at Queen's University Belfast, and will be published in the journal Fertility and Sterility."
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