Over exposure to environmental hazards such as heat, toxins and chemicals may lead to infertility. They may affect the sperm count either directly or indirectly by altering the hormone system. Some of them are listed below:
- Over exposure to lead may also affect fertility.
- Overheating the testicles. Regular use of saunas or hot tubs may lower your sperm count.
- Tobacco smoking may lower your quality and count of sperm.