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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.
The human body produces and destroys 15 million blood cells every second.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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.