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Effect of dietary B vitamins on BMD and risk of fracture in elderly men and women: the Rotterdam study.

Abstract

A mildly elevated homocysteine (Hcy) level is a novel and potentially modifiable risk factor for age-related osteoporotic fractures. Elevated Hcy levels can have a nutritional cause, such as inadequate intake of folate, riboflavin, pyridoxine or cobalamin, which serve as cofactors or substrates for the enzymes involved in the Hcy metabolism. We examined the association between intake of Hcy-related B vitamin (riboflavin, pyridoxine, folate and cobalamin) and femoral neck bone mineral density BMD (FN-BMD) and the risk of fracture in a large population-based cohort of elderly Caucasians. We studied 5304 individuals aged 55 years and over from the Rotterdam Study. Dietary intake of nutrients was obtained from food frequency questionnaires. Incident non-vertebral fractures were recorded during a mean follow-up period of 7.4 years, and vertebral fractures were assessed by X-rays during a mean follow-up period of 6.4 years. We observed a small but significant positive association between dietary pyridoxine (beta = 0.09, p = 1 x 10(-8)) and riboflavin intake (beta = 0.06, p = 0.002) and baseline FN-BMD. In addition, after controlling for gender, age and BMI, pyridoxine intake was inversely correlated to fracture risk. As compared to the three lowest quartiles, individuals in the highest quartile of age- and energy-adjusted dietary pyridoxine intake had a decreased risk of non-vertebral fractures (HR = 0.77, 95% CI = 0.65-0.92, p = 0.005) and of fragility fractures (HR = 0.55, 95% CI = 0.40-0.77, p = 0.0004). Further adjustments for other dietary B vitamins (riboflavin, folate and cobalamin), dietary intake of calcium, vitamin D, vitamin A and vitamin K, protein and energy intake, smoking and BMD did not essentially modify these results. We conclude that increased dietary riboflavin and pyridoxine intake was associated with higher FN-BMD. Furthermore, we found a reduction in risk of fracture in relation to dietary pyridoxine intake independent of BMD. These findings highlight the importance of considering nutritional factors in epidemiological studies of osteoporosis and fractures.

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  • Publisher Full Text
  • Authors+Show Affiliations

    ,

    Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands.

    , , , , , ,

    Source

    Bone 41:6 2007 Dec pg 987-94

    MeSH

    Aged
    Biomarkers
    Bone Density
    Diet
    Female
    Fractures, Bone
    Humans
    Male
    Middle Aged
    Netherlands
    Risk Factors
    Surveys and Questionnaires
    Vitamin B Complex

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    17936100

    Citation

    Yazdanpanah, Nahid, et al. "Effect of Dietary B Vitamins On BMD and Risk of Fracture in Elderly Men and Women: the Rotterdam Study." Bone, vol. 41, no. 6, 2007, pp. 987-94.
    Yazdanpanah N, Zillikens MC, Rivadeneira F, et al. Effect of dietary B vitamins on BMD and risk of fracture in elderly men and women: the Rotterdam study. Bone. 2007;41(6):987-94.
    Yazdanpanah, N., Zillikens, M. C., Rivadeneira, F., de Jong, R., Lindemans, J., Uitterlinden, A. G., ... van Meurs, J. B. (2007). Effect of dietary B vitamins on BMD and risk of fracture in elderly men and women: the Rotterdam study. Bone, 41(6), pp. 987-94.
    Yazdanpanah N, et al. Effect of Dietary B Vitamins On BMD and Risk of Fracture in Elderly Men and Women: the Rotterdam Study. Bone. 2007;41(6):987-94. PubMed PMID: 17936100.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Effect of dietary B vitamins on BMD and risk of fracture in elderly men and women: the Rotterdam study. AU - Yazdanpanah,Nahid, AU - Zillikens,M Carola, AU - Rivadeneira,Fernando, AU - de Jong,Robert, AU - Lindemans,Jan, AU - Uitterlinden,André G, AU - Pols,Huibert A P, AU - van Meurs,Joyce B J, Y1 - 2007/08/17/ PY - 2007/05/16/received PY - 2007/07/26/revised PY - 2007/08/04/accepted PY - 2007/10/16/pubmed PY - 2008/2/2/medline PY - 2007/10/16/entrez SP - 987 EP - 94 JF - Bone JO - Bone VL - 41 IS - 6 N2 - A mildly elevated homocysteine (Hcy) level is a novel and potentially modifiable risk factor for age-related osteoporotic fractures. Elevated Hcy levels can have a nutritional cause, such as inadequate intake of folate, riboflavin, pyridoxine or cobalamin, which serve as cofactors or substrates for the enzymes involved in the Hcy metabolism. We examined the association between intake of Hcy-related B vitamin (riboflavin, pyridoxine, folate and cobalamin) and femoral neck bone mineral density BMD (FN-BMD) and the risk of fracture in a large population-based cohort of elderly Caucasians. We studied 5304 individuals aged 55 years and over from the Rotterdam Study. Dietary intake of nutrients was obtained from food frequency questionnaires. Incident non-vertebral fractures were recorded during a mean follow-up period of 7.4 years, and vertebral fractures were assessed by X-rays during a mean follow-up period of 6.4 years. We observed a small but significant positive association between dietary pyridoxine (beta = 0.09, p = 1 x 10(-8)) and riboflavin intake (beta = 0.06, p = 0.002) and baseline FN-BMD. In addition, after controlling for gender, age and BMI, pyridoxine intake was inversely correlated to fracture risk. As compared to the three lowest quartiles, individuals in the highest quartile of age- and energy-adjusted dietary pyridoxine intake had a decreased risk of non-vertebral fractures (HR = 0.77, 95% CI = 0.65-0.92, p = 0.005) and of fragility fractures (HR = 0.55, 95% CI = 0.40-0.77, p = 0.0004). Further adjustments for other dietary B vitamins (riboflavin, folate and cobalamin), dietary intake of calcium, vitamin D, vitamin A and vitamin K, protein and energy intake, smoking and BMD did not essentially modify these results. We conclude that increased dietary riboflavin and pyridoxine intake was associated with higher FN-BMD. Furthermore, we found a reduction in risk of fracture in relation to dietary pyridoxine intake independent of BMD. These findings highlight the importance of considering nutritional factors in epidemiological studies of osteoporosis and fractures. SN - 8756-3282 UR - https://www.unboundmedicine.com/medline/citation/17936100/Effect_of_dietary_B_vitamins_on_BMD_and_risk_of_fracture_in_elderly_men_and_women:_the_Rotterdam_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S8756-3282(07)00623-0 DB - PRIME DP - Unbound Medicine ER -