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The horizontal fraction bar was introduced by the Arabs.
The familiar sounds of your heart are made by the heart's valves as they open and close.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.
Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.