Dr Stewart Irvine, one of the owlrd's leading experts on reproductive health, says the debate on decreasing male sperm counts has become more complicated. One of the reasons is that sperm count appears to vary widely country-by-country, the otherm that there is still no hard evidence for a cause.
Page 1 of 1
© 2013-2016 Science Photo Library Ltd. 327-329 Harrow Road, London, UK, W9 3RB
Registered in England and Wales no. 1550520. VAT no. GB 340 7410 88
Designed by Bluish