A newly expanded database of information from people in the United Kingdom provides a detailed picture of genetic diversity.

Autistic children aged 2 to 4 have about 15 percent more fluid between their skull and their brain than their typical peers do.

Chronic exposure to inflammation in the womb alters autism gene expression and disrupts social behavior in male mice, but not females.

Scientists used the gene-editing tool CRISPR to create two marmosets lacking MECP2, the gene mutated in Rett syndrome.

People with autism have more gray matter — or neuronal matter — in their brains overall than their typical peers do.

Two new methods for building ‘mini-brains’ may help researchers study how early brain development differs in people with autism.

A prospective study shows that antipsychotics mess up metabolism, autism is tied to a doubled risk for food allergies, and a report reveals pervasive sexual harassment in science.

Benefits of diets for autism features remain unproven, variants of the same DNA region make brains big or small, and STAT announces a new CRISPR tracker.

Boys with autism have smaller heads, are shorter and weigh less at birth than typical children do — but all that changes by age 3.