Cardiac activity could reveal autism’s physiology and confirm a hunch many clinicians share: that people with autism experience great stress.

Mutations in the autism gene NLGN3 may alter the gut nervous system of mice.

Many scientists have pointed out possible errors of analysis and interpretation in a high-profile study that suggested microbes can ease autism-like behaviors in mice.

Scientists are playing catch-up as microbiome-based treatments for autism proliferate.

Mice colonized with gut microbes from some autistic boys show behaviors like those of the boys.

Autistic children are more likely to have gastrointestinal problems than typical children are, but no more so than children with other brain conditions.

The largest-yet attempt to characterize the global diversity of the human microbiome — the population of microbes that live in our bodies — has found 4,930 species, 77 percent of which were previously unknown.

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

Food allergies may be more than twice as common among autistic children as among their typical peers; boys with autism also tend to have skin and respiratory allergies.

An ingestible electronic capsule enables researchers to instantaneously detect molecules associated with gastrointestinal issues.