Researchers found that roughly two-thirds of participants experienced noticeable behavioral improvements, including reductions in repetitive behaviors. Another clinical study involving children with severe autism found that more than 80% improved in at least one core symptom, such as repetitive behaviors or social interaction. Preclinical research has further expanded on these findings, offering a closer look at how CBD may work in the brain. Together, these studies indicate that CBD may influence both outward behaviors and underlying brain health, offering a potential dual benefit that warrants further clinical investigation. Across these studies, improvements were seen in repetitive behaviors, anxiety, social interaction, and disruptive outbursts.