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The familiar sounds of your heart are made by the heart's valves as they open and close.
GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.
Illicit drug use costs the United States approximately $181 billion every year.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.