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    Consumption of a whey protein-enriched diet may prevent hepatic steatosis associated with weight gain in elderly women

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    Authors
    Ooi, E.
    Adams, L.
    Zhu, K.
    Lewis, J.
    Kerr, Deborah
    Meng, X.
    Solah, Vicky
    Devine, A.
    Binns, Colin
    Prince, R.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Ooi, E. and Adams, L. and Zhu, K. and Lewis, J. and Kerr, D. and Meng, X. and Solah, V. et al. 2015. Consumption of a whey protein-enriched diet may prevent hepatic steatosis associated with weight gain in elderly women. Nutrition, Metabolism and Cardiovascular Diseases. 25 (4): pp. 388-395.
    Source Title
    Nutrition, Metabolism and Cardiovascular Diseases
    DOI
    10.1016/j.numecd.2014.11.005
    ISSN
    0939-4753
    School
    School of Public Health
    URI
    http://hdl.handle.net/20.500.11937/26658
    Collection
    • Curtin Research Publications
    Abstract

    Background and aims: Protein consumption has been associated with cardio-metabolic benefits, including weight loss and improved insulin sensitivity, and may have potential benefits for individuals with fatty liver disease (FLD). We investigated the effect of increasing dietary protein intake from whey relative to carbohydrate on hepatic steatosis.Methods and results: A two-year randomized, double-blind, placebo-controlled trial of 30 g/day whey protein-supplemented beverage (protein) or an energy-matched low-protein high-carbohydrate beverage (control) for cardio-metabolic and bone health in 219 healthy elderly women, recruited from the Western Australian general population. Hepatic steatosis was quantified using computed tomographic liver-to-spleen (L/S) ratio. FLD was defined as liver-to-spleen difference <10 Hounsfield units. At baseline, FLD prevalence was 11.4%. Control and protein groups were similar in body mass index (BMI), insulin resistance, L/S ratio and FLD prevalence at baseline. At two-years, dietary protein increased by 20 g in the protein, but not the control, group. Total energy intake and physical activity remained similar between groups. At two-years, BMI and FLD prevalence increased in both groups, with no between group differences. L/S ratio increased in control, but not protein, group at two-years, with no between group differences. In a within group comparison, change in BMI correlated with changes in L/S ratio in control (r = 0.37, P = 0.0007), but not with protein group (r = 0.04, P = 0.73). Conclusion: Increasing dietary protein intake from whey relative to carbohydrate does not reduce weight, hepatic steatosis or the prevalence of FLD in elderly women. However, it may prevent worsening of hepatic steatosis associated with weight gain.

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