A study published in the journal Pediatrics found that toddlers in cars with seats in which a child is seated on the rear are at an increased risk of autism spectrum disorders.
The study also found that parents were less likely to provide a seat for their child, compared to other cars.
The research was conducted by researchers at the Woking School of Child and Adolescent Health.
The authors found that the average age of a child in a child car seat was between 7 and 10 years old, and children aged 3 to 6 were more likely to be in a vehicle with a child seat.
The authors did not speculate on the cause of the increased risk, and said that it was not known if there were other environmental factors that contributed to the increased incidence of autism in the children in the study.
This article originally appeared on the New York Post.