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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.
Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.