London Telegraph

The anti-impotence drug Viagra could harm men’s fertility, scientists have warned.

	Viagra has become a widely used recreational drug

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.

His team took sperm samples and bathed them in weak solutions of Viagra, then compared the treated sperm to standard samples.

They found that Viagra made sperm more active, but also damaged its acrosome – the part containing the enzymes needed to break down the membrane surrounding a woman’s egg to allow sperm to fertilise it…

Click here to read entire story