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Well, since a lot (maybe all) of alternative medicine hasn't been approved by the FDA there's really no sure way to know if it works until you try it yourself. And, like you said, even when you think it is working, it may only be psychological.
I have experimented with several types of supplements and didn't get a lot of benefits, if any, except for one, I'm positive that a certain supplement I take helps my super dry skin.
A consumer just has to research and experiment.
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