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Did you know?
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
![A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_3_43_29_29648118.png)
![A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ...](https://biology-forums.com/gallery/30/medium_548020_01_06_17_5_17_19_30116996.png)