Toxic effects related to tobacco, marijuana, and other drugs
Smoking may cause infertility in both men and women. In experimental animals, nicotine has been shown to block the production of sperm and decrease the size of a man's testicles. In women, tobacco changes the cervical mucus, thus affecting the way sperm reach the egg. It also increases the risk of an ectopic pregnancy by affecting the fallopian tubes.
Marijuana may disrupt a woman's ovulation cycle (release of the egg). Marijuana use affects men by decreasing the sperm count and the quality of the sperm.
By Gina ShawJody, Carrie, and Jenny look back at how far they've come together − and look forward to a sweet future with their daughters.
For the past year, Jody Urbas, 34, Carrie Brainerd, 32, and Jenny Taylor, 28, have shared with REDBOOK readers the most intimate details of their lives as they went through pregnancy, miscarriage, fertility treatments, and all the ups and downs along the path to motherhood. As we revisit these three friends, Jenny celebrates her daughter's first birthday, Carrie...
In women, the effects of alcohol are related more to severe consequences for the fetus. Nevertheless, chronic alcoholism is related to disorders in ovulation and, therefore, interferes with fertility. Alcohol use by men interferes with the synthesis of testosterone and has an impact on sperm concentration. Alcoholism may delay a man's sexual response and may cause impotence, the inability to have or sustain an erection.