Journal
ASIAN JOURNAL OF ANDROLOGY
Volume 12, Issue 1, Pages 95-98Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/aja.2008.43
Keywords
semen quality; infertility; sperm morphology; fecundity
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Several recent studies have shown that the fecundity of a man decreases progressively with sperm concentrations below 40 million spermatozoa per mL. Therefore, it is unfortunate that the new World Health Organization guidelines for semen analysis recommend lowering the lower cutoff value for normal sperm concentration from 20 to 15 million spermatozoa per mL. As a result large groups of subfertile men across the world may not receive appropriate andrological help in the future.
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