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Author Question: In the 1870s and 1880s, Americans who challenged the power of government and big business ... (Read 64 times) |
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
There are approximately 3 million unintended pregnancies in the United States each year.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.