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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.