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Kim H, Rebholz CM. Plant-based diets for kidney disease prevention and treatment. Curr Opin Nephrol Hypertens 2024:00041552-990000000-00177. [PMID: 39115418 DOI: 10.1097/mnh.0000000000001015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
PURPOSE OF REVIEW Plant-based diets are associated with a lower risk of hypertension, diabetes, cardiovascular disease, and mortality. Using the most recent evidence, we critically appraised the role of plant-based diets in primary and secondary prevention of chronic kidney disease (CKD) with a focus on key nutritional factors (dietary acid load, phosphorus, potassium, sodium, and fiber). RECENT FINDINGS In healthy individuals, observational studies found that greater intake of plant protein and higher adherence to plant-based diets (overall, healthful, and provegetarian) was associated with a lower risk of CKD. In those with CKD, plant-based diets were associated with a lower risk of mortality, improved kidney function, and favorable metabolic profiles (fibroblast growth factor-23, uremic toxins, insulin sensitivity, inflammatory biomarkers). Only few studies reported nutrient content of plant-based diets. These studies found that plant-based diets had lower dietary acid load, lower or no significant difference in phosphorus and sodium, and higher potassium and fiber. One study reported that vegetarian diets were associated with severe vitamin D deficiency compared to nonvegetarian diets. SUMMARY Plant-based diets provide several benefits for prevention and management of CKD, with little risk for individuals with CKD. Incorporation of vitamin D rich foods in plant-based diets may be helpful.
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Affiliation(s)
- Hyunju Kim
- Department of Epidemiology
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington School of Public Health, Seattle, Washington
| | - Casey M Rebholz
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University
- Division of Nephrology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
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Darzi M, Rouhani MH, Keshavarz SA. The association between plant and animal protein intake and quality of life in patients undergoing hemodialysis. Front Nutr 2023; 10:1219976. [PMID: 37794969 PMCID: PMC10546620 DOI: 10.3389/fnut.2023.1219976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/01/2023] [Indexed: 10/06/2023] Open
Abstract
Background Hemodialysis (HD) patients often experience a significant reduction in quality of life (QOL). The source of dietary protein intake may influence the renal function and complications of HD patients. The present study assessed the relationship between plant and animal protein intake and QOL in HD patients. Methods 264 adult patients under dialysis for at least three months were included in this cross-sectional study. Dietary intakes were collected using a valid and reliable 168-item semi-quantitative food frequency questionnaire (FFQ) over the past year. Total, animal, and plant proteins were calculated for each patient. To evaluate QOL, Kidney Disease Quality of Life Short Form (KDQOL-SF 1/3) was used. Anthropometric measures were assessed according to standard protocols. Results In this study, the average age of participants was 58.62 ± 15.26 years old; most (73.5%) were men. The mean of total, plant, and animal proteins intake were 66.40 ± 34.29 g/d, 34.60 ± 18.24 g/d, and 31.80 ± 22.21 g/d. Furthermore, the mean score of QOL was 59.29 ± 18.68. After adjustment for potential confounders, a significant positive association was found between total dietary protein intake and QOL (β = 0.12; p = 0.03). Moreover, there was a significant association between plant-based protein intake and QOL (β = 0.26; p < 0.001). However, the association between animal protein intake and QOL was insignificant (β = 0.03; p = 0.60). Conclusion Higher total and plant proteins intake were associated with better QOL in HD patients. Further studies, particularly prospective ones, are needed to corroborate these associations.
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Affiliation(s)
- Melika Darzi
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Hossein Rouhani
- Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seyed-Ali Keshavarz
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Xie C, Li L, Zhou L, Sun C, Zhang Y, Li Y. Mediating role of learned helplessness' components in the association between health literacy/social support and self-management among maintenance haemodialysis patients in Changsha, China: a cross-sectional study. BMJ Open 2023; 13:e068601. [PMID: 37640465 PMCID: PMC10462950 DOI: 10.1136/bmjopen-2022-068601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 07/27/2023] [Indexed: 08/31/2023] Open
Abstract
OBJECTIVES To explore the multiple mediating roles of the learned helplessness's core system in the relationship between health literacy/social support and self-management. DESIGN Cross-sectional survey design. SETTING Changsha, China. PARTICIPANTS 239 Chinese maintenance haemodialysis (MHD) patients. METHODS Two multiple mediator models were constructed based on the COM-B (Capacity, Opportunity, Motivation - Behaviour) model. A total of 239 Chinese MHD patients participated in a cross-sectional study, which included surveys on the Learned Helplessness Scale for MHD patients, Dialysis Knowledge Questionnaire, Social Support Scale and Self-Management Scale for Haemodialysis. The PROCESS macro in SPSS was used for mediated effects analysis. RESULTS Helplessness and internality partially mediated the relationship between health literacy/social support and self-management ((β=-0.212, p<0.01; β=0.240, p<0.01)/(β=-0.331, p<0.001; β=0.376, p<0.001)). The mediation effect size was 0.780 (95% CI (0.373 to 1.218)) in the health literacy model, accounting for 45.29% of the total effect, and 0.286 (95% CI (0.207 to 0.377)) in the social support model, accounting for 57.88% of the total effect. The differences in effect sizes for helplessness and internality in the two models were -0.080 (95% CI (-0.374 to 0.216)) and -0.041 (95% CI (-0.127 to 0.043)), respectively. CONCLUSION Health literacy/social support directly affects MHD patients' self-management and indirectly affects it by changing learned helplessness, such as increasing internality while reducing helplessness.
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Affiliation(s)
- Chunyan Xie
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital of Central South University, Changsha, China
- Xiangya Nursing School, Central South University, Changsha, China
| | - Li Li
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital of Central South University, Changsha, China
- Department of Urology, Xinjiang Medical University Affiliated First Hospital, Urumqi, China
| | - Lin Zhou
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital of Central South University, Changsha, China
- Blood Purification Center, Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Cuifang Sun
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital of Central South University, Changsha, China
- Blood Purification Center, Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yini Zhang
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital of Central South University, Changsha, China
- Blood Purification Center, Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yamin Li
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital of Central South University, Changsha, China
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Kwon YJ, Lee HS, Park GE, Kim HM, Lee JJ, Kim WJ, Lee JW. The Association Between Total Protein Intake and All-Cause Mortality in Middle Aged and Older Korean Adults With Chronic Kidney Disease. Front Nutr 2022; 9:850109. [PMID: 35445069 PMCID: PMC9014017 DOI: 10.3389/fnut.2022.850109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/25/2022] [Indexed: 11/15/2022] Open
Abstract
Background and Aims Over the past decades, the optimum protein intake for patients with chronic kidney disease (CKD) has been an important, controversial issue. Dietary protein restriction has been commonly recommended for patients with CKD for preserving kidney function. However, evidence of the associations between long-term protein intake and mortality is not consistent in patients with CKD. Therefore, we aimed to examine the associations between total protein intake and all-cause mortality in Korean adults with CKD. Methods From three sub-cohorts of the Korean Genome and Epidemiology Study (KoGES) starting from 2001, total 3,892 participants with eGFR < 60 mL/min/1.73 m2 (CKD stage 3–5) were included in this study. Dietary data were collected using food-frequency questionnaires at baseline. Deaths were followed from 2001 to 2019. Cox proportional hazards regression model was used to evaluate the association between protein intake and all-cause mortality. Results During a median follow-up (min-max) of 11.1 years (0.3–15.1), 602 deaths due to all causes of mortality were documented. After adjustment for covariates, higher total protein intake was not associated with all-cause mortality [highest vs. lowest quintile of total protein intake (g/kg/day) and proportion (%) (Q5 vs. Q1), HR = 1.14 (0.75–1.72), and HR = 0.87 (0.67–1.13)] in CKD stage 3–5 patients. Conclusion Dietary protein intake was not associated with mortality from all causes in patients with CKD. Further research is needed to establish optimal protein intake levels and examine the impact of the dietary source of protein on various health outcomes and mortality in CKD.
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Affiliation(s)
- Yu-Jin Kwon
- Department of Family Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Hye Sun Lee
- Biostatistics Collaboration Unit, Department of Research Affairs, Yonsei University College of Medicine, Seoul, South Korea
| | - Go Eun Park
- Biostatistics Collaboration Unit, Department of Research Affairs, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyung-Mi Kim
- Department of Food and Nutrition, Dongduck Women's University, Seoul, South Korea
| | - Jung Joo Lee
- Nutrition Team, Yongin Severance Hospital, Yongin, South Korea
| | - Woo Jeong Kim
- Department of Nutrition Service, Gangnam Severance Hospital, Seoul, South Korea
| | - Ji-Won Lee
- Department of Family Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
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Liebman SE, Joshi S. Plant-Based Diets and Peritoneal Dialysis: A Review. Nutrients 2022; 14:1304. [PMID: 35334961 PMCID: PMC8950727 DOI: 10.3390/nu14061304] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/05/2022] [Accepted: 03/17/2022] [Indexed: 02/05/2023] Open
Abstract
Whole food plant-based diets are gaining popularity as a preventative and therapeutic modality for numerous chronic health conditions, including chronic kidney disease, but their role and safety in end-stage kidney disease patients on peritoneal dialysis (PD) is unclear. Given the general public's increased interest in this dietary pattern, it is likely that clinicians will encounter individuals on PD who are either consuming, considering, or interested in learning more about a diet with more plants. This review explores how increasing plant consumption might affect those on PD, encompassing potential benefits, including some specific to the PD population, and potential concerns.
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Affiliation(s)
- Scott E Liebman
- Department of Medicine, Division of Nephrology, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Shivam Joshi
- Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
- Department of Medicine, NYC Health + Hospitals/Bellevue, New York, NY 10016, USA
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Khor BH, Tallman DA, Karupaiah T, Khosla P, Chan M, Kopple JD. Nutritional Adequacy of Animal-Based and Plant-Based Asian Diets for Chronic Kidney Disease Patients: A Modeling Study. Nutrients 2021; 13:3341. [PMID: 34684342 PMCID: PMC8541170 DOI: 10.3390/nu13103341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/21/2021] [Accepted: 09/21/2021] [Indexed: 12/12/2022] Open
Abstract
Plant-based low protein diets (LPDs) have gained popularity for managing chronic kidney disease (CKD) patients. The nutritional adequacy of these and other LPDs prescribed for CKD patients have not been carefully examined. This study assessed the nutrient composition of such LPDs and moderately high protein diets (MHPDs) that might be prescribed for patients in the Asia Pacific region with CKD who are not dialyzed or undergoing maintenance dialysis. Conventional diets containing at least 50% animal-based proteins and plant-based diets were also planned with protein prescriptions of 0.5 to 0.8 g/kg/day and MHPDs with protein prescriptions of 1.0 to 1.2 g/kg/day. Plant-based, lacto-, ovo-, and lacto-ovo-vegetarian and vegan LPDs and MHPDs were planned by replacing some or all of the animal proteins from the conventional diet. With 0.5 g protein/kg/day, all diets were below the Recommended Dietary Allowances (RDA) for at least one essential amino acid (EAA). At a protein prescription of 0.6 g/kg/day, only the conventional LPD met the RDA for all EAAs. This deficiency with the plant-based LPDs persisted even with several plant food substitutions. With a protein prescription ≥0.7 g/kg/day, all the plant-based and vegetarian LPDs provided the RDA for all EAA. The plant-based and vegetarian diets also contained relatively greater potassium, phosphorus, and calcium content but lower long-chain n-3 polyunsaturated fatty acids and vitamin B-12 than the conventional diet. Other essential micronutrients were commonly below the RDA even at higher protein intakes. The low contents of some essential micronutrients were found in both animal-based and plant-based diets. Prescription of all LPDs for CKD patients, especially plant-based and vegetarian LPDs, requires careful planning to ensure the adequacy of all nutrients, particularly essential amino acids. Consideration should be given to supplementing all animal-based and plant-based LPDs and MHPDs with multivitamins and certain trace elements.
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Affiliation(s)
- Ban-Hock Khor
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 56000, Sabah, Malaysia;
| | - Dina A. Tallman
- Department of Nutrition and Food Science, Wayne State University, Detroit, MI 48202, USA; (D.A.T.); (P.K.)
- US Food and Drug Administration, Detroit, MI 48207, USA
| | - Tilakavati Karupaiah
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor’s University, Subang Jaya 47500, Selangor, Malaysia;
| | - Pramod Khosla
- Department of Nutrition and Food Science, Wayne State University, Detroit, MI 48202, USA; (D.A.T.); (P.K.)
| | - Maria Chan
- Departments of Renal Medicine and Nutrition and Dietetics, The St. George Hospital, Kogarah, NSW 2217, Australia;
| | - Joel D. Kopple
- Harbor-UCLA Medical Center, The Lundquist Institute, Torrance, CA 90502, USA
- David Geffen School of Medicine at UCLA and UCLA Fielding School of Public Health, Los Angeles, CA 90095, USA
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Pourafshar S, Scialla JJ. Reconsidering Plant-Based Diets in Patients Receiving Maintenance Hemodialysis. Am J Kidney Dis 2021; 78:624-626. [PMID: 34366181 DOI: 10.1053/j.ajkd.2021.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 06/18/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Shirin Pourafshar
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia.
| | - Julia J Scialla
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia; Public Health Sciences, University of Virginia School of Medicine, Charlottesville, Virginia
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