We recommend hyperbaric oxygen therapy (HBOT) for ASD due to its benefits for the immune system and blood flow(3-4). There have been several studies on the effects of HBOT for ASD, with many pointing to significant symptom improvement following HBOT(5-7).
One study found that HBOT significantly decreased markers of inflammation and resulted in improved motivation, speech, and cognitive awareness in children with ASD(5).
A more recent study also found that children with ASD improved in almost all categories of both the Autism Treatment Evaluation Checklist (ATEC) and Childhood Autism Rating Scale (CARS) following 40 sessions of HBOT(7). Although further research is necessary, preliminary evidence points to HBOT as an extremely low-risk, effective therapy for those with ASD.