The FDA is warning companies they can face legal action over misleading or false claims that therapies and products cure or treat autism. The agency is reaching out during National Autism Awareness Month to tell consumers about fake therapies for autism, which currently has no cure. Among the misused or fake methods on the market are chelation therapies, hyperbaric oxygen therapy and CocoKefir probiotics products, as well as drops, sprays and bath products, and they can pose serious health risks, the agency said.