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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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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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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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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.