Data from men in greater Seattle area reveals no downward trend in semen quality : further evidence that deterioration of semen quality is not geographically uniform.
To determine whether there has been a decline in semen quality in a group of healthy men during the past 21 years.
Retrospective analysis of the relationship between time and changes in semen parameters over 21 years using regression analysis.
A tertiary university center.
Five hundred ten healthy, normal men who donated multiple semen samples as participants in clinical studies between 1972 and 1993.
Main Outcome Measures
Sperm concentration, semen volume, total numbers of sperm per ejaculate, and percent spermatozoa with normal morphology.
There was no decrease in sperm concentration, semen volume, total number of sperm per ejaculate, and percent normal sperm morphology in 510 healthy men studied between 1972 and 1993.
We conclude that in this population of healthy young men there has not been any decline in semen quality in the past 21 years.
Mots-clés Pascal : Mâle, Sperme, Spermatozoïde, Qualité, Spermogramme, Variation temporelle, Variation géographique, Epidémiologie, Fécondité, Cellule germinale, Etats Unis, Amérique du Nord, Amérique, Homme
Mots-clés Pascal anglais : Male, Semen, Spermatozoa, Quality, Sperm count, Time variation, Geographical variation, Epidemiology, Fecundity, Germinal cell, United States, North America, America, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0270942
Code Inist : 002B30A01A2. Création : 199608.