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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.