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Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

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There are 60,000 miles of blood vessels in every adult human.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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