There is a reason - it's politics. Most supplements are manufactured in states like Utah and Nevada because of the nice, dry air, and the "favorable regulatory climate."
The supplement manufacturers are large donors to the campaigns of their senators and representatives.
So, when the FDA asks for regulatory authority over supplements, the drug manufacturers go tp the guys like Orrin Hatch and say "Hey, you're a senior senator. Get these awful regulatory agencies off our backs."
And he does.
Hey, I'm from Michigan. Want to hear about mileage standards for automobiles, or why SUVs don't count for car company emission standards?
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