Herbal Supplements Are Often Not What They Seem by Anahad O'Connor. The New York Times. November 3, 2013.
(1) The test used to examine the supplements was ________________.
(2) Of 44 herbal supplements tested, _____________ showed no trace of the plant advertised on the bottle.
(3) Americans spend an estimated ____________ a year on supplements.
(4) Unlike prescription drugs, supplements are consider _________________ until proven otherwise.
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