Drugs such as LSD act primarily on the serotonin system, which is implicated in autism — and some autistic people who experiment with psychoactive compounds report enhanced social connections, among other benefits. But researchers have more questions than answers.

An infusion of umbilical cord blood does not improve social skills in autistic children, according to results from the largest, most rigorous test of the therapy for autism to date.

Two agency letters put California-based Liveyon on warning and alert the public to the risks associated with stem-cell based therapies for autism.

Results from a new trial suggest that it’s safe to treat autistic children with umbilical cord stem cells. But parents must pay for the pricey infusions, and no one knows how or if the cells work.

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

Some chiropractors advertise that they can treat autism, but there’s no evidence to back that claim.

Parents of autistic children are paying tens of thousands of dollars for stem cell therapies that often use medical waste. Despite the risks, regulators have been slow to act.

The active ingredient in the drug popularly known as ecstasy eases social anxiety in people with autism.

The latest manual of international disease codes is out, a franchise claims to have an autism cure, and two reports diverge on the validity of the social-motivation hypothesis.

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.