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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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.
Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.