We need to talk about fertility afresh, not least because the sperm-count ‘crisis’ doesn’t add up
Research shows that men who smoke can lower sperm count of their sons
Scientists document 59.3 per cent drop in average amount of sperm produced by Western men between 1973 and 2011
New study finds link between environmental contaminants and declining canine virility
Over 2,000 recruited by University of Sheffiled for research
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