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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.