Lawmakers in several states are trying to ban a widely used pesticide that the Environmental Protection Agency is fighting to keep on the market.

People with autism who avoid social interactions or have troubles with daily living skills may be at increased risk of an early death.

A child’s risk of autism is slightly elevated if a parent or sibling has asthma or an autoimmune disease.

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.

Despite the hype around a new study, it may be too soon to conclude that taking prenatal vitamins during pregnancy lowers the child’s chances of autism.

Some traits of autism are associated with obvious differences in brain structure, and the scope of these alterations may depend on the person’s sex.

Understanding the interactions between the placenta and the uterine lining could explain how maternal immune activation leads to autism.

Una remota ciudad colombiana es el hogar del grupo más grande de personas con síndrome de X frágil. Los científicos están aprendiendo de ellos y tratando de ayudar.

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

Some autism traits look the same across cultures, and they could form the basis of a global screening tool.