What is Known About Dietary Interventions and Body Weight Management After Kidney Transplantation? A Scoping Review

  • Elis Forcellini Pedrollo
    Address correspondence to Elis Forcellini Pedrollo, PhD, Dona Laura Street 333, 401/ 90430091 Porto Alegre, Rio Grande do Sul, Brazil.
    Post Graduate Program in Health Sciences, Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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  • Camila Corrêa
    Post Graduate Program in Health Sciences, Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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  • Bruna Bellincanta Nicoletto
    Post Graduate Program in Health Sciences, Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil

    Knowledge Area of Life Sciences, Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul, Brazil
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  • Gabriela Corrêa Souza
    Department of Nutrition and Post Graduate Program in Food, Nutrition and Health, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

    Food and Nutrition Research Center, Hospital de Clínicas de Porto Alegre (HCPA-UFRGS), Porto Alegre, Brazil
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  • Cristiane Bauermann Leitão
    Post Graduate Program in Health Sciences, Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil

    Department of Internal Medicine, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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      Several studies report weight gain after kidney transplantation, which is commonly related to poor outcomes. However, recommendations for dietary interventions aiming to manage these patients’ weight are still scarce in the literature. Thus, this review seeks to describe the state of literature on the effect of dietary interventions on weight after kidney transplantation.


      Scoping review.


      This review was designed according to the recommendations for scoping reviews elaborated by the Joanna Briggs Institute. Studies assessing the effect of dietary interventions on body weight after kidney transplantations were searched in MEDLINE, EMBASE, and databases up to June 28, 2021. Two independent reviewers summarized the data collected.


      Thirteen (503 patients) of the 4.983 articles identified in the searched databases were included in our study. Most studies were published before 2010 and presented incomplete methodology descriptions. Nutritional counseling and dietary prescriptions according to the Step 1 diet of the American Heart Association (AHA) were the most common interventions. Only 2 studies evaluated changes in body weight as primary outcome. Three studies were randomized clinical trials (RCT), and none of these found the adopted interventions to demonstrate benefits.


      Our scoping review evinced a scarcity of data available in the literature addressing this topic. Most studies were not controlled and presented poor methodological quality. Moreover, these studies included small sample sizes, so that the assessment of dietary interventions in these patients still lacks power for definitive conclusions. Prospective RCT should be conducted to define effective in preventing weight gain or weight loss after kidney transplant.


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