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Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.