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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.