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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.