Early pregnancy sulfur dioxide exposure raises odds of congenital limb defects

Early pregnancy sulfur dioxide exposure raises odds of congenital limb defects

Maternal exposure to sulfur dioxide during the first trimester was associated with higher odds of congenital limb defects in offspring in a large population-based cohort from Wuhan. Associations were strongest for polydactyly and limb shortening, while other major air pollutants showed no consistent links with overall risk.