Smoking affects the ovaries and damages the uterine wall reducing conception and implantation chances.
Women who smoke and undergo in vitro fertilization and embryo transfer treatment of infertility may not respond as well to hormone stimulation.
Heavy smokers have a higher likelihood of having abnormal vaginal bleeding than nonsmokers.
Women who smoke are prone to early menopause.
In some women infertility can be reversed after smoking cessation.
Men and Infertility
Smoking is linked to low sperm counts and sluggish sperm motility.
Smoking can gradually and permanently damage all blood vessels, including those that carry blood to the penis. This can make it difficult to get or maintain an erection.
Men who quit smoking often have fewer problems achieving a normal erection.