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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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The average adult has about 21 square feet of skin.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.