Smoking significantly reduces fertility in both men and women.Women who smoke are at greater risk for experiencing premature menopause (known as premature ovarian failure). Smoking directly affects their egg quality and egg quantity, resulting in increased rates of infertility. In IVF patients, smoking has been shown to dramatically lower the chances for a successful treatment. In addition, the chances for a spontaneous abortion are also increased in smokers compared with nonsmoking women. Smoking also directly affects sperm quality, diminishing both sperm count and sperm motility. Needless to say, quitting smoking is a good idea before pursuing fertility or fertility treatments.