(NEWSER) – Tests to determine what's really in popular herbal supplements found a key ingredient is often missing: herbs. Researchers conducted DNA tests on 44 bottles of the remedies sold by 12 companies and found that around a third contained no trace at all of the healing herb they were supposed to contain, reports the New York Times. Instead, the supplements were made of powdered weeds or fillers like rice and soybean, which were used to dilute other supplements that did contain some of the plant listed on the label.
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