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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

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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.

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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.

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