and SIDS. Maternal Health low birth weight How does smoking affect pregnancy and fetal development? February 4, 2026 by Riding Smoking during pregnancy poses significant risks to both the mother and the developing fetus. Toxins from cigarette smoke, such as nicotine and carbon monoxide, can cross the placenta, leading to various complications. These include premature birth, low birth weight, and increased risk of sudden infant death syndrome (SIDS). Quitting smoking, ideally before or during the […] Read more »