Smoking while pregnant can have serious adverse effects on both the mother and the developing fetus: Low birth weight: Smoking during pregnancy is a major risk factor for low birth weight, which can increase the risk of infant mortality and a variety of long-term health problems. Premature birth: Smoking during pregnancy increases the risk of premature birth, which can result in a variety of health problems for the newborn. Stillbirth: Smoking during pregnancy increases the risk of stillbirth, which is the death of a fetus after 20 weeks of pregnancy. Sudden infant death syndrome (SIDS): Infants born to mothers who smoke during pregnancy are at increased risk of SIDS. Birth defects: Smoking during pregnancy can increase the risk of birth defects, including cleft lip and palate, heart defects, and limb defects. Developmental problems: Children born to mothers who smoke during pregnancy are at increased risk of developmental problems, including learning and behavioral problems. Respiratory problems: Infants born to mothers who smoke during pregnancy are at increased risk of respiratory problems, including asthma and bronchitis. In conclusion, smoking during pregnancy is not safe and can have serious adverse effects on both the mother and the developing fetus. It's important for pregnant women to quit smoking or avoid it altogether to reduce the risk of these health problems.