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There are 60,000 miles of blood vessels in every adult human.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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.
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.