Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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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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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
Color mixtures of reflected pigment—subtractive process
Patterns of Inheritance for Eye Color
How to fully analyze the standard and factored form of a quadratic equation (Question 1)