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Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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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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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

American women operating machine lathes in a munitions factory. American women operating machine lathes in a munitions factory.
Geopolitical Framework Geopolitical Framework
Denaturation of DNA when native (double-stranded) Denaturation of DNA when native (double-stranded)
Tia, an African-American mother of two school-aged children Tia, an African-American mother of two school-aged children
Cumulative risk framework Cumulative risk framework
Video: Normal and abnormal blood pH

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