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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.