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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Did you know?
Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Thyroid conditions may make getting pregnant impossible.