Tobacco affects a woman's fertility, although the exact mechanisms by which it does so are not known. In women smokers, the synthesis of hormones by the ovary, the function of the uterine tubes and even endometrial receptivity may be altered.
The time it takes for a woman to become pregnant is longer if she is a smoker. Moreover, this negative effect is also visible when the woman is a passive smoker.
On the other hand, smoking also brings forward the age at which a woman reaches menopause by 1-4 years compared to non-smoking women.