Excessive lead exposure can cause suppression of blood testosterone level. Men who have been exposed to DBCP frequently will suffer from small, soft testes, elevated blood gonadotropin levels, low testosterone levels, and few or no sperm in their semen. The reduction in sperm production is dependent upon the length and degree of DBCP exposure. Thus, to preserve fertility, every effort should be made to guard the testes from radiation when radiotherapy is applied to the pelvis and other abdominal sites. In many cases, infertile semen may be caused by an intrinsic failure of heat regulation in the testis, leading to high temperatures that impair sperm production.
Physicians also recommend against exposure to high heat through saunas and hot tubs.
In addition, it is suggested that men stop wearing tight-fitting briefs or bikinis in favor of boxer shorts. Sexual Dysfunction Problem with sexual performance is an important risk factor for infertility, and sexual dysfunction is often correctable. Unfortunately, though, sexual dysfunction is a factor that may not be recognized or emphasized by patients who present infertility problems to their physicians. Erectile dysfunction often occurs because of emotional factors such as depression, anxiety about sexual performance, or fear of pregnancy and fatherhood. Affected men may be unable to achieve or maintain an erection until ejaculation has occurred, even though their testicular function is normal.