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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
The average adult has about 21 square feet of skin.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
There are more sensory neurons in the tongue than in any other part of the body.
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