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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.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.