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    Why Cigarettes are a Woman's Worst Enemy

    Here are some compelling reasons to quit smoking.

    WebMD Feature

    Sure, cigarettes can harm anybody, men and women alike.But some of smoking's ill effects, from ectopic pregnancy to premature menopause, are reserved for women only. This November 19 is the American Cancer Society's 22nd Great American Smokeout. If you haven't decided togive up smoking yet, here are some compelling reasons to quit now.

    Smoking Increases Your Risk of Cervical and Rectal Cancer

    Not only can smoking cause a variety of cancers in both men and women,it puts women at higher risk of cervical cancer, according to the American College of Obstetricians and Gynecologists (ACOG). A Danish study publishedin the April 21, 1999 issue of the Journal of the National Cancer finds that premenopausal women who smoke are six times more likely to developrectal cancer than those who don't.

    Smoking Worsens Your Period

    According to the ACOG, women who smoke experience more severe premenstrual symptoms and have a 50 percent increase in cramps lasting two or more days.

    Smoking Damages Your Fertility

    Smoking affects practically every phase of conception, according to VickiSeltzer, M.D., vice president for women's health services at North Shore-LongIsland Jewish Health System in New York. "Smokers have a greater risk ofnot ovulating, and it is also less likely that a fertilized egg will implantin the uterus. Smokers who receive in vitro fertilization are less likelyto be successful." Seltzer also notes that nicotine interferes with thefunction of the fallopian tube and can hinder an egg from traveling normallyto the uterus, which can lead to an ectopic or tubal pregnancy -- potentiallylife-threatening conditions.

    Smoking Hurts Your Unborn Baby

    "When you smoke during pregnancy, you poison the fetus," says Benjamin Sachs, professor of obstetrics and gynecology at Harvard Medical School. "Carbon monoxide has a greater affinity for fetal tissue than for adult tissue, and when nicotine crosses the placenta it speeds up the [baby's] heart rate."

    According to the ACOG, smoking increases a pregnant woman's risk of miscarrying by 39 percent and heightens the chances of other serious complications, including placental abruption (when the placenta separates from the uterine wall), placenta previa (when the placenta covers the opening of the uterus) and stillbirth.

    Many studies have pointed to maternal smoking as the most preventable cause of low birth weight. The breast milk of smokers can carry nicotine to a suckling baby. And a 1995 report in the Journal of Pediatrics found that infants exposed to tobacco smoke are nearly three times more likely to die from sudden infant death syndrome.

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