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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.