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The familiar sounds of your heart are made by the heart's valves as they open and close.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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.