Increased autism risk among children exposed to antidepressants in utero may be related less to the medications than to the mothers’ depression.

A large study finds that certain health complications during pregnancy or delivery increase the chances of having a child with autism by 26 percent or more.

The absence of an autism-linked gene, combined with exposure to a mock infection, produces social deficits in mice — but only in males.

Babies who have their first bowel movement before birth have a slightly increased risk of autism, according to a study of nearly 10 million people.

Women who come down with influenza while pregnant are no more likely than those without the infection to have a child with autism.

Women who are overweight or obese when pregnant increase their risk of having a child who is later diagnosed with autism by about 30 percent.

The interplay between a mouse’s immune system and certain mutations in her pups may increase autism-like features in the pups.

Female rats exposed to the pesticide chlorpyrifos show little interest in social interaction.