Consuming Lactobacillus reuteri, a gut microbe found in yogurt and breast milk, may enhance social interactions in three mouse models of autism.

Damien Fair has a knack for transforming obstacles into opportunities, a trait that has brought trailblazing discoveries and admiration from colleagues.

Autistic people have trouble making facial expressions appropriate to the circumstances.

The proportion of studies that include people with a severe form of autism has fallen over the past three decades.

Carriers of fragile X premutations in Ricaurte, Colombia, have more medical problems than carriers living elsewhere — and discovering why might yield treatments for the syndrome.

Autistic people who have trouble speaking or moving often do poorly on standard tests of intelligence. Newer methods promise to uncover their abilities — and improve our understanding of autism itself.

Some children diagnosed with autism by age 2 show unusual responses to sights, sounds and textures as infants.

Clinicians need to be able to distinguish autism from post-traumatic stress disorder so they can provide the right support.

Autistic women’s activity in a ‘social’ brain region tracks with the extent to which they mask their autism.

Autism may be accompanied by high levels of the hormone leptin in early childhood.