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There are more nerve cells in one human brain than there are stars in the Milky Way.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
There are 20 feet of blood vessels in each square inch of human skin.
People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.