| Summary: | 碩士 === 國防醫學院 === 公共衛生學研究所 === 96 === Osteoporosis is one of the important diseases of the elderly world-wide. In the Taiwan area, bone fracture is increasing with advanced age, presumably on account of osteoporosis and proneness to fall, threating to health and quality of life. Data collected in the Elderly Nutrition and Health Survey in Taiwan (Elderly NAHSIT), 1999-2000, have been used in the present study to examine the possible effects of vitamin D, vitamin K, and dairy product intakes and on calcaneus BUA (broadband ultrasound attenuation) T-score as an index of bone health. From a 24-hour dietary recall and a food frequency questionnaire, have been estimated vitamin D, vitamin K and dairy product intakes. Bone fracture risk, judged by BUA, increased as average vitamin D intake decreased. Low (BUA T-score value> -1), middle (BUA T-score value -1 to -2), and high (BUA T-score value< -2) categories had vitamin D intakes of 8.46±1.42, 6.68±0.47, and 5.45±0.23μg/day, respectively (p for trend <0.01). The odds ratios (ORs) for the men of high bone fracture risk across quartiles 1-4 were 1.00 (reference), 1.01 (95% CI: 0.53-1.91), 0.90 (95% CI: 0.48-1.70), 0.54 (95% CI: 0.31-0.91) (p for trend = 0.04). The multivariable OR of high bone fracture risk in quartile versus quartile 1 was 0.41 (95% CI: 0.22-0.74) (p for trend = 0.02). In female, however, similar but not significant results were found. Similar findings were resulted from food source only vitamin D in men and women. For vitamin K, dairy product intakes there were no trends. For males, increased vitamin D intake was associated with a relatively higher BUA T-score than in female; vitamin K intake was not demonstrably protection in men or women; nor were dairy products. Where vitamin D intake is lower, fracture risk in higher in Taiwanese elderly; but vitamin K and dairy products were not significantly protective. In this study, higher vitamin D intakes were independently prective, irrespective protein, calcium, vitamin K, dairy product and the soy product intakes, of higher calcaneum BUA T-scores.
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