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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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There are more sensory neurons in the tongue than in any other part of the body.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.
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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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