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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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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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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.