I caught part of his act shown on PBS recently. I did some web research and am still not sure what to think. I don't think he is pure scam but some of his techniques (with ADHD and such) are not really mainstream.
His weight loss stuff (what little I know of it) seems common sense like no refined sugars, sticking to complex carbs, and keeping a food journal. One complaint that I came across is that he pushes his own products (like vitamins and such). On his Amen Clinic website you can see the kinds supplements he sells.
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