Healthystuff.org, a project of the environmental non-profit the Ecology Center, found "chemicals of concern" in 60 percent of the more than 150 seats tested, including brominated flame retardants, arsenic, lead, and other heavy metals. They then ranked the best and worst seats based on how many hazardous chemicals they contained.
Even so, they found that overall, things have gotten better, in terms of toxicity levels, since 2008, when the group first started its research, there's been a 64 % improvement in car seat rankings.
Healthystuff dot org picked the chemicals of concern based on studies showing links to reproductive problems, developmental and learning disabilities, hormone imbalances and cancer. The group did not test to see whether any of the chemicals were coming out of the product and potentially exposing children. The findings also have no bearing on how well these seats perform in a car accident.
CNN contacted the car seat manufacturers mentioned in the report and none responded to requests for comment. For a list of the most toxic and least toxic car seats, check out healthy stuff.org.
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