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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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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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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.