Declining semen quality and increasing incidence of testicular cancer: is there a common cause?

A systematic review of the international literature on semen analy- sis performed in normal men, including almost 15,000 men in 61 publications revealed a highly significant drop in mean sperm counts from 113 million/ml in 1940 to 66 million/ml in 1990 (8) (Figure 1).

also in 132,142 other papers