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Soybean and soy isoflavone intake indicate a positive change in bone mineral density for 2 years in young Korean women.

Abstract

Many studies have shown that soybean and isoflavones have a favorable effect on bone mass for postmenopausal women, but few data are available on young Asian women. To investigate the effect of soybean and isoflavone intake on bone mineral density (BMD) and its change among young Korean women over 2 years, we conducted a longitudinal study for 34 women. The BMD was measured 3 times with 1-year intervals by dual x-ray absorptiometry at the lumbar spine and femur (neck, Ward's triangle [WT], and trochanter). Dietary intake was assessed up to 8 times by 24-hour recall with average 4-month interval. During the study period, BMD increased significantly for lumber spine and WT (2.5% and 5.2%). The average daily intake of soybeans and isoflavones was 39 g and 8 mg, respectively. Soybean intake and total isoflavone intake had positive correlation on femoral neck (FN) and WT. By longitudinal mixed-model regression analysis, BMD increased 0.26% per 1 mg of isoflavone intake per year in the FN and 0.31% for WT (P = .05 and .008). In conclusion, soybean and isoflavone intake have a positive effect on the change of BMD on the FN and WT among young Korean women. Because soybean and isoflavone intakes could be confounded by other nutrients, the positive effects of isoflavones on bone should be further investigated.

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  • Authors+Show Affiliations

    ,

    Department of Food and Nutrition, Seoul National University, Seoul 151-742, Korea.

    ,

    Source

    MeSH

    Absorptiometry, Photon
    Adult
    Bone Density
    Diet
    Female
    Femur Neck
    Humans
    Isoflavones
    Korea
    Longitudinal Studies
    Menopause
    Mental Recall
    Soybeans
    Young Adult

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    19083384

    Citation

    Song, YoonJu, et al. "Soybean and Soy Isoflavone Intake Indicate a Positive Change in Bone Mineral Density for 2 Years in Young Korean Women." Nutrition Research (New York, N.Y.), vol. 28, no. 1, 2008, pp. 25-30.
    Song Y, Paik HY, Joung H. Soybean and soy isoflavone intake indicate a positive change in bone mineral density for 2 years in young Korean women. Nutr Res. 2008;28(1):25-30.
    Song, Y., Paik, H. Y., & Joung, H. (2008). Soybean and soy isoflavone intake indicate a positive change in bone mineral density for 2 years in young Korean women. Nutrition Research (New York, N.Y.), 28(1), pp. 25-30. doi:10.1016/j.nutres.2007.11.001.
    Song Y, Paik HY, Joung H. Soybean and Soy Isoflavone Intake Indicate a Positive Change in Bone Mineral Density for 2 Years in Young Korean Women. Nutr Res. 2008;28(1):25-30. PubMed PMID: 19083384.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Soybean and soy isoflavone intake indicate a positive change in bone mineral density for 2 years in young Korean women. AU - Song,YoonJu, AU - Paik,Hee Young, AU - Joung,Hyojee, PY - 2007/04/30/received PY - 2007/09/27/revised PY - 2007/11/09/accepted PY - 2008/12/17/entrez PY - 2008/12/17/pubmed PY - 2009/3/7/medline SP - 25 EP - 30 JF - Nutrition research (New York, N.Y.) JO - Nutr Res VL - 28 IS - 1 N2 - Many studies have shown that soybean and isoflavones have a favorable effect on bone mass for postmenopausal women, but few data are available on young Asian women. To investigate the effect of soybean and isoflavone intake on bone mineral density (BMD) and its change among young Korean women over 2 years, we conducted a longitudinal study for 34 women. The BMD was measured 3 times with 1-year intervals by dual x-ray absorptiometry at the lumbar spine and femur (neck, Ward's triangle [WT], and trochanter). Dietary intake was assessed up to 8 times by 24-hour recall with average 4-month interval. During the study period, BMD increased significantly for lumber spine and WT (2.5% and 5.2%). The average daily intake of soybeans and isoflavones was 39 g and 8 mg, respectively. Soybean intake and total isoflavone intake had positive correlation on femoral neck (FN) and WT. By longitudinal mixed-model regression analysis, BMD increased 0.26% per 1 mg of isoflavone intake per year in the FN and 0.31% for WT (P = .05 and .008). In conclusion, soybean and isoflavone intake have a positive effect on the change of BMD on the FN and WT among young Korean women. Because soybean and isoflavone intakes could be confounded by other nutrients, the positive effects of isoflavones on bone should be further investigated. SN - 1879-0739 UR - https://www.unboundmedicine.com/medline/citation/19083384/Soybean_and_soy_isoflavone_intake_indicate_a_positive_change_in_bone_mineral_density_for_2_years_in_young_Korean_women_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0271-5317(07)00271-0 DB - PRIME DP - Unbound Medicine ER -