In addition to heart problems triggered by some supplements, emergencies often arise when kids swallow dietary supplements meant for adults, according to the CDC analysis, or when older adults choke on the pills. Lee Woodgate/Ikon Images/Corbis hide caption

toggle caption Lee Woodgate/Ikon Images/Corbis

Dietary Supplements Send Thousands To ERs Yearly

  • Download
  • <iframe src="https://www.npr.org/player/embed/448322590/448697189" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Ideally, we'd all eat super healthful diets. But that's not the world we live in, and multivitamins may help bridge the nutritional gaps. Jasper White/Getty Images hide caption

toggle caption Jasper White/Getty Images

Multivitamins: The Case For Taking One A Day

  • Download
  • <iframe src="https://www.npr.org/player/embed/382587987/382587988" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Even versions of Zi Xiu Tang Bee Pollen labeled "genuine" and "anti-counterfeit" have been found to contain the drug sibutramine, which was supposed to come off the U.S. market in 2010 for safety reasons. Food and Drug Administration hide caption

toggle caption Food and Drug Administration

Banned Drugs Still Turning Up In Weight-Loss Supplements

  • Download
  • <iframe src="https://www.npr.org/player/embed/357831203/357998918" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Dietary supplements are generally defined as vitamins, minerals, herbs and extracts. They're regulated as a unique category of food by the Food and Drug Administration. iStockphoto.com hide caption

toggle caption iStockphoto.com

With osteoarthritis, knees become swollen and stiff, and cartilage can degenerate. Ted Kinsman/Science Source hide caption

toggle caption Ted Kinsman/Science Source

Exercise May Help Knees More Than Glucosamine And Chondroitin

  • Download
  • <iframe src="https://www.npr.org/player/embed/231451187/233790763" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

If only it was as simple as popping a supplement and being set for life. But alas, no. iStockphoto.com hide caption

toggle caption iStockphoto.com

Ads often tout dietary supplements and vitamins as "natural" remedies. But studies show megadoses of some vitamins can actually boost the risk of heart disease and cancer, warns Dr. Paul Offit. iStockphoto.com hide caption

toggle caption iStockphoto.com

Some sports supplements contain the ingredient DMAA. The FDA has warned that DMAA may not be safe. iStockphoto.com hide caption

toggle caption iStockphoto.com

Popular Workout Booster Draws Safety Scrutiny

  • Download
  • <iframe src="https://www.npr.org/player/embed/171997753/172130760" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Despite public health campaigns urging women in the U.S. to take folic acid, many are still not taking the supplements when they become pregnant. iStockphoto.com hide caption

toggle caption iStockphoto.com

Folic Acid For Pregnant Mothers Cuts Kids' Autism Risk

  • Download
  • <iframe src="https://www.npr.org/player/embed/171828067/171842617" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

There might be much more caffeine than you think in those supplements you're taking. There also might be much less. Janine Lamontagne/iStockphoto hide caption

toggle caption Janine Lamontagne/iStockphoto

Federal health officials recommend 1,000 milligrams of calcium per day for people younger than 50, but some are overdoing it. iStockphoto.com hide caption

toggle caption iStockphoto.com

Too Much Calcium Could Cause Kidney, Heart Problems, Researchers Say

  • Download
  • <iframe src="https://www.npr.org/player/embed/158506960/158679235" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Staying fit and eating well can help cancer survivors, too, a review of the latest evidence shows. Lucy Pemoni/AP hide caption

toggle caption Lucy Pemoni/AP