The Tobacco Reference Guide

by David Moyer, MD.


Chapter 14 Pregnancy and fertility

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Pregnancy and fertility: Fertility and Menopause

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Nicotine is toxic to sperm, and reduces its ability to penetrate eggs by 12 to 16

percent. Nicotine lowers the sperm count, causes sperm to clump together, reduces

sperm swimming ability and causes it to grow in abnormal shapes.

San Francisco Chronicle, February 4, 1991, p. A4

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Two studies reported in the March 1998 issue of the journal Fertility and Sterility show

that men who smoke have poorer quality and more structurally abnormal sperm, and

that smoking might inhibit fertility.

American Medical News, April 27, 1998

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Male smokers have lower levels of testosterone, a reduced volume of semen

ejaculated with decreased sperm production and lower sperm count, an impairment of

sperm motility and movement, a higher percentage of sperm with abnormal

morphology or shape, and an increase in the number of white blood cells in the sperm,

or pyospermia.

Cigarettes, pp. 96-97

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In men in fertility clinics, cigarette smoking is associated with significant decreases in

sperm penetration assay scores and with increased numbers of seminal fluid white

blood cells.

Journal of Urology, October 1990, p. 900

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In a study from the Czech Republic, male teenage smokers had sperm damage and

significant evidence of chromosomal damage that could cause genetic abnormalities

in their children.

San Francisco Chronicle, October 2, 1998, p. A2

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  Page 19 of 28

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