Smoking during pregnancy increases the risk for a child with defects of the oral cavity

Women who smoke during pregnancy or regular inhaled cigarette smoke, increase the risk of "harelip" and "Wolf Bay" in the child. These abnormalities occur in the malformation of the upper wall of the mouth between 5 to 9 weeks of fetal development, according to Norwegian researchers. Scientists conducted a study that found that women who smoked more than 10 cigarettes per day during the first trimester of pregnancy, the risk of having a child with a cleft lip in 2 times more than in non-pregnant women. But in non-pregnant women, inhaling cigarette smoke from people smoking in the vicinity, for 2 hours or more a day are more likely to have a child with this defect by 60%. This study was led by Dr. Rolv T. Lie, Norwegian University of Bergen. The results of the study showed that smoking affects the occurrence of birth defects in children, regardless of the structure of genes. Although theoretically some genetic combinations options sensitive people. To the toxic effects of cigarette smoke But the researchers are not able to find the relationship between genes and active or passive smoking mothers.