Anemia (anemia; an-– otritsa. a prefix + Greek haima – blood; synonym: an anemia) – a state at which reduction of a hemoglobin content in blood unit of volume is observed, most often at simultaneous decrease in number of erythrocytes.

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The most rare disease – a disease the Kura. Only representatives of the tribe Faure in New Guinea are ill it. The patient dies of laughter. It is considered that eating of a human brain is an origin of a disease.