Smoking even one or two cigarettes a day before or during pregnancy can lead to serious health problems for newborns, according to a new analysis of more than 12 million families. Globally, an estimated 1.7 per cent of pregnant women smoke30223-7/fulltext), though that rate is 8.1 per cent in Europe and 5.9 per cent in the Americas. Smoking during pregnancy can negatively affect the newborn’s health, increasing their risk of preterm birth, low birth weight, restricted infant growth, and death. In the study, which was published in the Journal of Epidemiology & Community Health, researchers anal…