Читать книгу Dad's Guide to Pregnancy For Dummies - Sharon Perkins - Страница 59

Smoking can affect sperm and eggs and increase miscarriage rates. Nearly one in four adults smoke in America. If either of you is a smoker, quit for at least a few months before trying to get pregnant.

Compared to nonsmokers, smokers

 Have sperm that are less motile (capable of moving spontaneously). Sperm have a long way to go to reach the egg, so they need all the motility they can get.

 Have lower sperm counts and more abnormally shaped sperm, which are chromosomally abnormal.

 Have more eggs that are chromosomally abnormal.

 Have a 50 percent higher rate of miscarriage.

 Are two to four times more likely to have an ectopic pregnancy.