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The familiar sounds of your heart are made by the heart's valves as they open and close.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.