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Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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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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Video: Mendel's Pea Experiment

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