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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.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.