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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.