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Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Rural versus Urban Population, 1820–1860 Rural versus Urban Population, 1820–1860
Estrogen versus testosterone in Males as they Age Estrogen versus testosterone in Males as they Age
Science versus religion: What accounts for the conflict and tension that have existed between them? Science versus religion: What accounts for the conflict and tension that have existed between them?
Primary causes of chronic liver disease in the United States. Primary causes of chronic liver disease in the United States.
Student Test Scores versus GDP per Capita Student Test Scores versus GDP per Capita
Percent of oxygen in the atmosphere versus altitude. Percent of oxygen in the atmosphere versus altitude.
Video: Cardiac Cycle (Part 3 of 4)

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