Have you been taking a dietary supplement for weight loss that's been advertised as herbal or all-natural? The FDA has a new warning about scores of such supplements that can be hazardous to your health because they contain traditional pharmaceutical compounds.

Supplements like Starcaps, 3x Slimming Power and 5x Imelda Perfect Slimming are among those being named. Many of these supplements were marketed heavily on websites, infomercials and as part of store displays. See the complete list on the FDA's website.

Of course, not all herbal remedies, natural remedies and dietary supplements are unsafe. But there are obviously enough rogue players and manufacturers who make honest mistakes to warrant concern.

There have been reports of people experiencing elevated blood pressure, increased seizures and bad drug interactions when taking the affected weight loss pills. The New York Times reported one man was taking a supplement that was marketed as a natural remedy but actually contained amphetamines!

A special note to the libertarians: Yes, Clark is calling for more oversight of this industry. He believes there is a legitimate role in government to ensure the safety of these supplements. Back in the mid-1990s, the makers of the herbal and all-natural dietary supplements got what amounted to a blanket exemption from any federal oversight…and now we're seeing the downside of that.