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The Truth Behind the Top 10 Dietary Supplements

What you need to know about the most popular dietary and nutritional supplements on the market.
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The Dangers of Megadoses

Many consumers go way beyond the daily multivitamin, and take megadoses of dietary supplements. But is more better in this case?

No, experts say. In fact, exceeding the Recommended Daily Allowances for some vitamins and minerals could be dangerous.

"Generally, you should not exceed 100% of the recommendation for vitamins or minerals because these supplements are in addition to the food you eat, and potential toxicities can occur," says Grotto.

Be especially careful with minerals and-fat soluble vitamins A, D, E, and K, which can build up in your system.

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Reviewed on June 30, 2009
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