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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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