By Mark Huffman

Millions of people take a daily vitamin pill. It starts when we're young. Pharmaceutical company Bayer has been making Flintstones vitamins for kids since the 1960s.

People with busy schedules, concerned that they don't get the daily nutrition they need from meals, often take a daily vitamin supplement. Others load up on a particular vitamin for a specific health reason.

Good idea? Maybe. Here's what the National Institutes of Health (NIH) has to say about vitamin supplements:

“If you don't eat a nutritious variety of foods, some supplements might help you get adequate amounts of essential nutrients. However, supplements can't take the place of the variety of foods that are important to a healthy diet.”
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