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May 19, 2000 -- Teach your children well. It's best to start now, rather than later when it comes to eating right and exercising, because osteoporosis may be more like a test you need to study for all semester, not just cram for the night before.
Authors of a study published in the May issue of the American Journal of Clinical Nutrition found that the incidence of hip fracture was increased for both men and women with low vitamin K intake. Though the association of vitamin K intake to vitamin K is not clear, they stress the importance of proper nutrition and adequate vitamin K intake in preventing osteoporosis.
Osteoporosis occurs when bones break down faster than they are built, causing them to become lighter, less dense, weaker, and more susceptible to breaking. The older you get, the more likely you are to develop osteoporosis, and women are more susceptible than men.
Several factors can contribute to the development of osteoporosis. For example, poor nutrition - particularly a diet low in protein or calcium; lack of use -- such as after an injury immobilizes part of the body; and lack of hormones that tell the body to make more bone, which happens during and after menopause, are all thought to be contributing factors.
Therefore, regular exercise and a diet rich in calcium and vitamin D from sources such as milk and green leafy vegetables can all help prevent osteoporosis, as can quitting smoking.
Lead author Sarah L. Booth and her colleagues studied nearly 900 elderly patients to determine if the amount of vitamin K in their diets had any influence on their risk for fracture or low bone mineral density. They report that subjects with the highest vitamin K intake had a significantly lower risk of hip fracture than those with the lowest intake. They did not, however, find an association between how much vitamin K these people ate and their bone mineral density.
Despite the failure to find any associations here, what is important, notes Robert E. Olson, MD, who wrote an accompanying editorial, is that proper nutrition and adequate intake of vitamin K is still important for proper bone health. People need to eat well and see their physician regularly to monitor their overall health as well as bone health, he tells WebMD.
"The prevention of osteoporosis begins in adolescence, and physicians should counsel their female adolescent patients about good nutrition, particularly the intake of adequate energy to maintain a normal body composition, and to take in adequate amounts of calcium (1,300 mg/day), vitamin C (80 mg/day), vitamin D (5 mcg/day) and vitamin K (60 mcg/day)," says Olson, a professor of pediatrics at the College of Medicine at the University of South Florida as well as professor of medicine at the State University of New York at Stonybrook.