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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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