Babies exposed to air pollution during pregnancy take longer to learn to speak, research finds

Key Points:

• A King’s College London study found that babies exposed to higher levels of nitrogen dioxide and particulate matter during the first trimester show delayed speech development at 18 months, with premature babies also exhibiting impaired motor skills.
• The research highlights systemic inequality, as marginalized and working-class communities in urban areas like London are disproportionately exposed to toxic air pollution, impacting infants from before birth.
• Globally, nearly everyone breathes air exceeding WHO pollution guidelines, with poorer and racialized communities facing the greatest burden, raising concerns about current pollution standards and their adequacy in protecting child development.
• The study analyzed 498 infants born in London between 2015 and 2020, linking maternal pollution exposure by postcode to lower language and motor skill scores in children, especially among those born prematurely.
• Experts emphasize the significant public health implications, noting that air pollution may cause widespread cognitive deficits worldwide, underscoring the urgent need for systemic environmental and social reforms.