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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo
In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism
New Yorkers flee from the dust caused by the collapse of the twin towers of the World Trade Center f New Yorkers flee from the dust caused by the collapse of the twin towers of the World Trade Center f
Equinoxes: March 21 and September 21 Equinoxes: March 21 and September 21
A phylogenetic tree showing that all non-African human populations share a closer genetic relationsh A phylogenetic tree showing that all non-African human populations share a closer genetic relationsh
Video: Mycobacterium tuberculosis: Drug Resistance and Natural Selection

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