These are the startling findings of three articles just published in the highly influential Annals of Internal Medicine.

The researchers involved in the studies didn't mince words; they're concerned that people are spending too much money on pills that confer no benefit, and in some cases may even be harmful. What's more, they even hinted that companies selling supplements are fueling false health anxieties to offer unnecessary cures. In an editorial titled "Enough is Enough: Stop Wasting Money on Vitamin and Mineral Supplements," Dr. Lawrence Appel of the Johns Hopkins School of Medicine in Baltimore and his co-authors wrote, "Most supplements do not prevent chronic disease or death, their use is not justified, and they should be avoided."

Wow. That'll come as a shock to the nearly 40% of adults who regularly take antioxidants, multivitamins, and other supplements.