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Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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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.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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People about to have surgery must tell their health care providers about all supplements they take.