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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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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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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Everyday situations sometimes present opportunities for children to build information processing ... Everyday situations sometimes present opportunities for children to build information processing ...
The flammable range consists of the concentration of fuel that will burn in atmospheric oxygen—the ... The flammable range consists of the concentration of fuel that will burn in atmospheric oxygen—the ...
Simultaneous Determination of Income and Modernization Simultaneous Determination of Income and Modernization
A polysome consists of an mRNA molecule loaded with many ribosomes, all engaged in translation. A polysome consists of an mRNA molecule loaded with many ribosomes, all engaged in translation.
Mammalian male sex determination is initiated by the Y-linked SRY gene Mammalian male sex determination is initiated by the Y-linked SRY gene
Video: Primary and secondary response to infection

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