Hyperbaric Oxygen therapy (HBOT) has risen in recent years as an “alternative” therapy for many conditions, autism included. The logic behind HBOT is rather fuzzy. For example, there was some discussion of using HBOT to reduce oxidative stress a few years back. How increasing oxygen in the body would decrease oxidative stress was not clear. Some other discussions focused on oxygen perfusion. Basically, some studies have shown that some areas of the brain may be getting less oxygen in autistics than in non-autistics. The idea was that increasing the oxygen to those areas might result in some improvement in some measure or another.
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