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The longest a person has survived after a heart transplant is 24 years.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
There are 20 feet of blood vessels in each square inch of human skin.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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