Study links Mom's smoke exposure to Baby's birth health

This study looks at how tobacco smoke exposure during pregnancy—whether from smoking or secondhand smoke—affects a newborn's health right after birth. Researchers will measure a chemical called cotinine in the baby's cord blood to sort them into three groups: active exposure, passive exposure, or no exposure. They will then compare things like blood gases, oxygen levels, and other routine health checks. No treatments or extra procedures are given; it's purely observational.