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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Asthma cases in Americans are about 75% higher today than they were in 1980.
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.