Autism may be accompanied by high levels of the hormone leptin in early childhood.
About 1 in 40 children in the United States has autism, according to a survey conducted in 2016. Roughly 30 percent of those children were not being treated for the condition at the time.
The rising prevalence of autism is not leveling off, according to a new study that accounts for every diagnosis made in Denmark over 32 years.
The network of researchers keeping tabs on autism prevalence in U.S. children plans to follow up with some of those children in adolescence.
Taking antidepressants during pregnancy is unlikely to raise the risk of having a child with autism.
How researchers design autism prevalence studies has a significant impact on the results, says Eric Fombonne.
High blood pressure, preterm birth and other pregnancy complications may increase the risk of autism.