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Did you know?
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.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.