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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The familiar sounds of your heart are made by the heart's valves as they open and close.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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