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Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

German and Irish Settlement in the Northeastern United States, 1870 German and Irish Settlement in the Northeastern United States, 1870
An ABC fire extinguisher is safe for most fires. An ABC fire extinguisher is safe for most fires.
In the past year, about one in five adults in the United States reported symptoms of anxiety ... In the past year, about one in five adults in the United States reported symptoms of anxiety ...
Many teens are chronically sleep-deprived, leading to daytime sleepiness. Many teens are chronically sleep-deprived, leading to daytime sleepiness.
Relationship between Income and Happiness in the United States Relationship between Income and Happiness in the United States
GDP per Capita in the United States, the United Kingdom, and Japan, 1870–2009 GDP per Capita in the United States, the United Kingdom, and Japan, 1870–2009
Video: ETC Protein Complexes & Chemiosmosis (Total ATP Production and ATP Synthase)

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