Parents often worry about how environmental factors might shape their child's future. A review of 18 different studies looked at the link between phthalates—chemicals often used in plastics and personal care products—and autism spectrum disorder (ASD). The researchers looked at children from early childhood through adolescence.
The findings show that exposure to these chemicals before birth, especially during the middle stages of pregnancy, is linked to subtle increases in autistic traits. There was also some evidence suggesting that boys might be more susceptible to these effects based on specific chemical markers.
It is important to note that the current evidence is limited and varied across studies. While the link exists, it is an association rather than a proven cause. Because the data is still inconsistent, scientists say more research is needed to confirm these findings and understand exactly how these chemicals affect development.