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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.