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Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
Did you know?
The average adult has about 21 square feet of skin.