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Smoking impairs sperm motility and normal development, increasing chances of infertility, miscarriage and birth defects. In the U.S., about 1 in 8 women smokes during pregnancy. Smoking may lower the oxygen available to the baby, which can cause the baby to grow more slowly and gain less weight in the womb.
Smoking Raises Risk for Oral Clefts
Oral clefts are birth defects that take place in the oral-facial area often the lip, the roof of the mouth (hard palate), or the soft tissue in the back of the mouth (soft palate). Because of birth defects study, we now know that smokers' babies may be more likely to have cleft lip and/or cleft palate.
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