How Gingko and Ginseng May Actually Damage Your Health and Drain Your Wallet

Cooperman of Consumer Lab.com estimates that as many as 50 percent of herbal supplements have quality problems, such as too little or too much of the advertised ingredients, contamination by substances not listed on the label, or poor disintegration in the body, which prevents their absorption. Testing by some groups has found supplements contaminated with aluminum, arsenic, cadmium, mercury and lead.
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