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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.