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Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The longest a person has survived after a heart transplant is 24 years.
There are more nerve cells in one human brain than there are stars in the Milky Way.