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There are more bacteria in your mouth than there are people in the world.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.
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.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.