Decline of semen quality among 10 932 males consulting for couple infertility over a 20-year period in Marseille, France
C. Geoffroy-Siraudin,Anderson Loundou,Fanny Romain,Vincent Achard,Blandine Courbiere,Marie-Hélène Perrard,Philippe Durand,Marie-Roberte Guichaoua +7 more
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The results clearly indicate that the quality of semen decreased in this population over the study period and the same trends of sperm quality deterioration with time were observed.Abstract:
Semen from 10 932 male partners of infertile couples was analysed and sperm parameter trends were evaluated at the Reproduction Biology Laboratory of the University Hospital of Marseille (France) between 1988 and 2007. After 3-6 days of abstinence, semen samples were collected. Measurements of seminal fluid volume, pH, sperm concentration, total sperm count, motility and detailed morphology of spermatozoa were performed. Sperm parameters were analysed on the entire population and in men with normal total numeration (≥40 million per ejaculate). The whole population demonstrated declining trends in sperm concentration (1.5% per year), total sperm count (1.6% per year), total motility (0.4% per year), rapid motility (5.5% per year) and normal morphology (2.2% per year). In the group of selected samples with total normal sperm count, the same trends of sperm quality deterioration with time were observed. Our results clearly indicate that the quality of semen decreased in this population over the study period.read more
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References
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Journal ArticleDOI
Evidence for decreasing quality of semen during past 50 years.
TL;DR: There has been a genuine decline in semen quality over the past 50 years, and as male fertility is to some extent correlated with sperm count the results may reflect an overall reduction in male fertility.
Journal ArticleDOI
World Health Organization reference values for human semen characteristics
Trevor G. Cooper,Elizabeth A. Noonan,Sigrid von Eckardstein,Jacques Auger,H.W. Gordon Baker,Hermann M. Behre,Trine B. Haugen,Thinus F. Kruger,Christina Wang,Michael T. Mbizvo,Kirsten M. Vogelsong +10 more
TL;DR: Semen quality of the reference population was superior to that of the men from the general population and normozoospermic men, and provide an appropriate tool in conjunction with clinical data to evaluate a patient's semen quality and prospects for fertility.
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Are oestrogens involved in falling sperm counts and disorders of the male reproductive tract
TL;DR: It is argued that the increasing incidence of reproductive abnormalities in the human male may be related to increased oestrogen exposure in utero, and mechanisms by which this exposure could occur are identified.
Journal ArticleDOI
Decline in Semen Quality among Fertile Men in Paris during the Past 20 Years
TL;DR: The volume of seminal fluid, the sperm concentration, and the percentages of motile and morphologically normal spermatozoa in 1351 healthy fertile men from 1973 through 1992 were measured.
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Relation between semen quality and fertility: a population-based study of 430 first-pregnancy planners
Jens Peter Bonde,Erik Ernst,Tina Kold Jensen,Niels Henrik Hjollund,Henrik A Kolstad,Thomas H. Scheike,Aleksander Giwercman,Niels E. Skakkebæk,Tine Brink Henriksen,Jørn Olsen +9 more
TL;DR: The study suggests that the current WHO guidelines for normal semen quality should be used with caution, as some men with sperm counts above the lower limit of the normal range defined by WHO may in fact be subfertile.