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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Degree of palpation Degree of palpation
Early in the twentieth century, when malnutrition was common, companies such as this one advertised Early in the twentieth century, when malnutrition was common, companies such as this one advertised
How the neural plate develops into the neural tube during the third and fourth weeks of human ... How the neural plate develops into the neural tube during the third and fourth weeks of human ...
Determining the extent of a burn: (A) rule of nines (adults); (B) Lund-Browder chart (children). Determining the extent of a burn: (A) rule of nines (adults); (B) Lund-Browder chart (children).
How to solve first degree equations (Part 2) How to solve first degree equations (Part 2)
Burn Severity Chart Burn Severity Chart
Video: Lactation and Breast Feeding

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