Imagine this: you seemingly can't get enough food, thus your weight spirals out of control. What if chewing a piece of gum could solve your problems?

Your question may not sound as far-fetched as you think, thanks to work by London scientists.

Millions of us take popular drugs in our efforts to lose weight, but do we really know how they will affect us over the long haul?

That's what researchers say health experts need to find out because the long-term risks aren't fully known, despite two highly popular drugs being approved for use by the U.S. government.

More than 11 million bottles of pain-relieving acetaminophen were recalled Thursday, Nov. 9, after some were contaminated with metal fragments.

The recall affects bottles containing 500-milligram caplets made by Perrigo Co., and sold at Wal-Mart, CVS, Safeway and more than 100 other retailers that offer the medicine under store labels. It does not affect the brand name Tylenol.