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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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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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