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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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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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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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