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Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.