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Study completed in 2022, but still no results posted or study published.

I've never really thought about this but, could it be because they don't want people to "try this at home"? Either because of safety issues, or my actual hypothesis, because they want to keep their possible pool of candidates as big as possible?

No, they have a patent so they would be in a hurry to publish if the results were good.

From the comments in the article above, it sounds like it may have failed it's primary outcome (autism symptoms). They only say there was significant benefit for "average of all symptoms", but it isn't clear if that is the same thing.

A lot of studies take time to release results.

Not 4 years though.

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