Tens of millions of Americans take nutritional supplements. New studies allege some pills do not contain what is on the label. Other research indicates consumers may be ingesting too many vitamins. New concerns about dietary supplements.
Public water supplies are treated to kill any organisms that could make you sick, but waterborne viruses, bacteria and parasites continue to cause illness and even death in the U.S. A panel talks about how giardia, cryptosporidium, E. coli and other nasty "bugs" still plague Americans, and what’s being done about it.
- Dennis Juranek of the Centers for Disease Control and Prevention
- David Parenti infectious disease physician at George Washington University Medical Center
- Steve Schaub of the Environmental Protection Agency
- Dennis Lang of the National Institute of Allergy and Infectious Diseases
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