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Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.