High levels of chemicals called polychlorinated biphenyls in a pregnant woman’s blood may raise the risk of autism in her child.

Only a small fraction of women who battle infections during pregnancy have children with autism, suggesting that some infections are riskier than others.

Rare antibodies associated with autism are unusually common among women who developed diabetes while pregnant with a child who has autism.

Jill Escher is on a mission to spur research into how chemicals in the environment may influence risk for autism.

Infection during pregnancy may blunt the growth of neurons in the fetus by boosting levels of the chemical messenger serotonin.

Autism is four times more prevalent among extremely premature babies than in the general population.

Pregnant women with elevated levels of certain immune molecules are at increased risk of having a child with both autism and intellectual disability.

High levels of an inflammatory protein in pregnant women may lower the risk of autism in their children.

The mutations that men accumulate in their sperm as they age don’t account for most of their increased risk of having a child with autism.

Triggering immune defenses in pregnant mice leads to autism-like behaviors not only in their pups, but also in the following generations.