Is there definite evidence that smoking reduces fertility?
A – Yes, both tobacco and marijuana affect fertility in both men and women. Cigarette smoking in women accelerates the depletion of eggs in the ovaries. This makes it more difficult for a female smoker to conceive and also increases the risk of miscarriage. Nicotine, the main component in cigarettes, increases the risk of genetic abnormalities in eggs. Women who smoke also enter menopause on the average a year and a half earlier than nonsmoking women. Men who smoke also have problems with their sperm. Smoking one to two packs of cigarettes daily increases the possibility of abnormal sperm motility (movement) and morphology (shapes of sperm).
