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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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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

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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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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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Burial caves from Mangaia, Cook Islands, document the changing patterns of mortuary ritual. Burial caves from Mangaia, Cook Islands, document the changing patterns of mortuary ritual.
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phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa
Video: Attention Deficit Disorder (ADD)

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