Brothers and sisters of people with autism are both about two to three times more likely than the general population to have an autistic child themselves.

The relative contributions of genetic and environmental factors to autism have held steady over multiple decades, according to a large twin study.

High blood pressure during pregnancy may raise a woman’s chances of having an autistic child.

A study that followed 126 autistic people in England from their preteen years to age 23 found little improvement in their behavioral and emotional problems.

Society for Neuroscience members are demanding sharp cuts to the carbon footprint of its annual meeting.

Older men and women are more likely than young ones to have a child with autism, but this connection is not straightforward.

A child’s environment exerts a strong influence on the severity of her autism, a study of identical twins suggests.

The question of autism’s heritability is compelling for researchers and laypeople alike, but many people in both groups misunderstand its definition.

Pregnant women’s use of acetaminophen may increase the odds of autism and attention deficit hyperactivity disorder in their children.

Children born with high blood levels of vitamin D have 25 percent decreased odds of autism compared with those born with low levels.