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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.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.