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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Snow Leopard - Showing teeth at Taronga Zoo, Australia Snow Leopard - Showing teeth at Taronga Zoo, Australia
Monkeys and apes such as this chimpanzee can be recognized in the fossil record by the anatomy of th Monkeys and apes such as this chimpanzee can be recognized in the fossil record by the anatomy of th
The Neandertal skull and teeth. The Neandertal skull and teeth.
Inflated Phrases Compared with Concise Terms Inflated Phrases Compared with Concise Terms
Erosion of palatal surfaces of maxillary teeth due to chronic vomiting. Erosion of palatal surfaces of maxillary teeth due to chronic vomiting.
How to evaluate algebraic terms containing fractional exponents without a calculator (Part 2) How to evaluate algebraic terms containing fractional exponents without a calculator (Part 2)
Video: Magnetic resonance imaging (MRI)

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