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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
Everyone has one nostril that is larger than the other.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).