New research has discovered that mothers who smoke during pregnancy may cause wheeze and asthma in their children when they reach preschool, even among kids whose moms did not smoke until late pregnancy or after birth. Asa Neuman, MD, of the Institute of Environmental Medicine at the Karolinska Institutet in Stockholm, Sweden, said: "Epidemiological evidence suggests that exposure to maternal smoking during fetal and early life increases the risk off childhood wheezing and asthma, but earlier studies were not able to differentiate the effects of prenatal and postnatal exposure...
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