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Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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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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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.