Environmental And Occupational Factors

Exposure to toxic substances, such as lead, cadmium, mercury, hydrocarbons, pesticides, and radioactivity, may negatively impact the sperm count and quality.

Warmer temperatures tend to hinder sperm production. That's because the temperature in the scrotum must be below the rest of the body for the testicles to produce healthy sperm. Exposing the male genitals to heat, such as the frequent use of saunas, steam rooms, hot tubs, whirlpools, and hot baths, can temporarily lower sperm count. Men who wear tight clothing may be lowering their sperm count as well. That's because the testicles are pressed closely to the body and become warmer than if they were able to hang freely within the scrotal sac. Males with infertility difficulties are often advised not to wear tight-fitting pants or underwear.

Emotional stress may interfere with sperm count and also lead to premature ejaculation or even impotence.

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