Cottonroot This herb has been used in China as a male contraceptive. St. John's Wort One study showed that St. John's Wort in high doses was toxic to hamster sperm. Its effect on human sperm is unknown, however it would be logical to avoid this herb until more studies are available. At this time, there are still many questions regarding the safety as well as the efficacy of this supplement since it has a lot of the same properties as anabolic steroids. Until more information is available about this supplement, its use can not be recommended.
S moking Smoking can have a negative impact on both male and female fertility.
It is important to note that exposure to second hand smoke can be just as harmful as smoking itself. In men, smoking can reduce sperm counts and impair sperm motility. In women, smoking has been linked to impaired fertility and increased risk of miscarriage. Although it may be difficult, stopping smoking is an important lifestyle change that maximizes your chances of becoming pregnant. There are many products available on the market to help you stop smoking.