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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
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