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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

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If you could remove all of your skin, it would weigh up to 5 pounds.

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On average, the stomach produces 2 L of hydrochloric acid per day.

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

These species are all at risk of extinction. These species are all at risk of extinction.
The pH of human blood ranges from 7.35 to 7.45. The pH of human blood ranges from 7.35 to 7.45.
10 weeks old human embryo 10 weeks old human embryo
The Taung Child, the first of the australopithecines to be discovered, is the type specimen for Aust The Taung Child, the first of the australopithecines to be discovered, is the type specimen for Aust
DNA Among Species of Hominids DNA Among Species of Hominids
Systems of the Human Body Systems of the Human Body
Video: Fractures Animation

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