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Asthma cases in Americans are about 75% higher today than they were in 1980.
The average adult has about 21 square feet of skin.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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