Analysis of Present Sperm Quality in Different Populations

To evaluate current status of male sperm quality and compare with the data of 110 cases in 1980's from same laboratory,434 fertile man and 346 cases of man with uncertain sperm quality were examined.The results showed sperm quality was significantly declined.The changes were most obvious in the sperm counts and total number of sperm,which were decreased by 54.2%～98.9% and 39.7%～114.5% respectively.Among parameters of sperm quality,motility of sperm is most affected in overall motility,a level and a+b level motility,with percentage of abnormal case were 18.4%～42.3%,37.5%～68.1% and 39.5%～75.2% respectively.The number of cases within normal range of sperm parameters was merely 33.6% for group of fertile man and 26.0% for the group of man with uncertain sperm quality.These results suggest that it should pay more attention to the decline of sperm quality.