Semen quality and male reproductive health: the controversy about human sperm concentration decline.

@article{Jouannet2001SemenQA,
  title={Semen quality and male reproductive health: the controversy about human sperm concentration decline.},
  author={Pierre Jouannet and Chun Ling Wang and Florence M Eustache and Tina Kold-Jensen and Jacques Auger},
  journal={APMIS : acta pathologica, microbiologica, et immunologica Scandinavica},
  year={2001},
  volume={109 5},
  pages={333-44}
}
Concern about the effect of environmental changes on male reproductive health has grown in recent years to become a major preoccupation in some developed countries. A possible decline in human sperm concentration was suggested in the early seventies following studies in the US. In 1992 a meta-analysis of 61 articles published by Carlsen et al. concluded that the mean sperm count of healthy men had declined by 1% per year over the previous 50 years. From 1995 and onwards, some retrospective… CONTINUE READING