Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
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Excessive alcohol use costs the country approximately $235 billion every year.
During the Pullman strike in Chicago, workers protesting wage cuts did $340,000 in property damage,
The Number of Children Americans Think Are Ideal
The human eye, a product of 600 million years of evolution (Lamb, Collin, & Pugh, 2007).