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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
The familiar sounds of your heart are made by the heart's valves as they open and close.