The best multivitamin for you -- and 11 to steer clear of

You've been told for years that popping a multivitamin every day might help you live longer. But the daily multi habit has been getting a bit of bad press lately.

First, ConsumerLab.com, a watchdog of the supplement industry, found that more than half of the 21 multis it tested had too much (or too little) of certain vitamins -- or had been contaminated with dangerous substances such as lead. Then a controversial paper from researchers in Denmark and other European countries, published in the Journal of the American Medical Association, made the claim that taking vitamins may actually shorten your life.
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