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  1. #1
    Usuari@ expert@ Avatar de sujal
    Fecha de ingreso

    Piedras en los riñones

    DASH-Style Diet and 24-Hour Urine Composition
    Eric N. Taylor*,, Meir J. Stampfer*,, David B. Mount,||, and Gary C. Curhan*,,
    * Channing Laboratory and Renal Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts; Division of Nephrology and Transplantation, Maine Medical Center, Portland, Maine; Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts; and || VA Boston Healthcare System, Boston, Massachusetts

    Background and objectives: We previously observed associations between a Dietary Approaches to Stop Hypertension (DASH)-style diet and large reductions in kidney stone risk. This study examined associations between a DASH-style diet and 24-hour excretions of urinary lithogenic factors.

    Design, setting, participants, & measurements: We studied 3426 participants with and without nephrolithiasis in the Health Professionals Follow-up Study (HPFS) and the Nurses' Health Studies (NHS) I and II. A dietary DASH score was based on seven components: high intake of fruits, vegetables, nuts and legumes, dairy products, and whole grains and low intake of sweetened beverages and red and processed meats. We used analysis of covariance to adjust for age, stone history, body size, and other factors.

    Results: Comparing participants in the highest to lowest quintiles of DASH score, multivariate-adjusted urinary calcium excretion was 3% greater in HPFS (P trend 0.12), 10% greater in NHS I (P trend <0.01), and 12% greater in NHS II (P trend 0.05). Urinary oxalate was 4% to 18% greater (P trend all <0.03), urinary citrate was 11% to 16% greater (P trend all <0.01), and urinary volume was 16% to 32% greater (P trend all <0.001). Higher DASH score was associated with higher urine potassium, magnesium, phosphate, and pH, and lower relative supersaturations (RSS) of calcium oxalate (women only) and uric acid.

    Conclusions: A DASH-style diet may reduce stone risk by increasing urinary citrate and volume. The small associations between higher DASH score and lower RSS suggest unidentified stone inhibitors in dairy products and/or plants.

  2. #2 Avatar de vellocinodeoro
    Fecha de ingreso

    Yo me he pasado una semana entera ingresada por una piedra en el riñón. Han sido los peores días de mi vida.



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