'Healing clays' show promise for fighting deadly MRSA superbug infections, other diseases

Minerals from clay could provide a source of powerful antimicrobials for fighting deadly MRSA infections and other diseases. Click here for more information.

NEW ORLEANS, April 6, 2008 — Mud may be coming to a medicine cabinet or pharmacy near you. Scientists in Arizona report that minerals from clay could form the basis of a new generation of inexpensive, highly-effective antimicrobials for fighting MRSA infections that are moving out of health care settings and into the community. These “superbugs” are increasingly resistant to multiple antibiotics and cause thousands of deaths each year.

Unlike conventional antibiotics that are often administered by injection or pills, the so-called “healing clays” could be used as rub-on creams or ointments to keep MRSA infections from spreading, the researchers say. The clays also show promise against a wide range of other harmful bacteria, including those that cause skin infections and food poisoning, the scientists add. Their study, one of the first to explore the antimicrobial activity of natural clays in detail, was presented today at the 235th national meeting of the American Chemical Society.

Clays have been used for thousands of years as a remedy for infected wounds, indigestion, and other health problems, either by applying clay to the skin or eating it. Today, clays are commonly used at health spas in the form of mud baths and facials. Armed with new investigative tools, researchers are beginning to explore their health claims scientifically.

“Clays are little chemical drug-stores in a packet,” said study co-leader Lynda Williams, Ph.D., a geochemist at Arizona State University in Tempe. “They contain literally hundreds of elements. Some of these compounds are beneficial but others aren’t. Our goal is to find out what nature is doing and see if we can find a better way to kill harmful bacteria.”