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Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort

Accumulating evidence links nut consumption with an improved risk of metabolic syndrome (MetS); however, long-term trials are lacking. We examined the effects of a daily dose of walnuts for two years on MetS in a large elderly cohort. A total of 698 healthy elderly participants were randomly assigne...

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Autores principales: Al Abdrabalnabi, Ahmed, Rajaram, Sujatha, Bitok, Edward, Oda, Keiji, Beeson, W. Lawrence, Kaur, Amandeep, Cofán, Montserrat, Serra-Mir, Mercè, Roth, Irene, Ros, Emilio, Sabaté, Joan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7071225/
https://www.ncbi.nlm.nih.gov/pubmed/32053984
http://dx.doi.org/10.3390/nu12020451
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author Al Abdrabalnabi, Ahmed
Rajaram, Sujatha
Bitok, Edward
Oda, Keiji
Beeson, W. Lawrence
Kaur, Amandeep
Cofán, Montserrat
Serra-Mir, Mercè
Roth, Irene
Ros, Emilio
Sabaté, Joan
author_facet Al Abdrabalnabi, Ahmed
Rajaram, Sujatha
Bitok, Edward
Oda, Keiji
Beeson, W. Lawrence
Kaur, Amandeep
Cofán, Montserrat
Serra-Mir, Mercè
Roth, Irene
Ros, Emilio
Sabaté, Joan
author_sort Al Abdrabalnabi, Ahmed
collection PubMed
description Accumulating evidence links nut consumption with an improved risk of metabolic syndrome (MetS); however, long-term trials are lacking. We examined the effects of a daily dose of walnuts for two years on MetS in a large elderly cohort. A total of 698 healthy elderly participants were randomly assigned to either a walnut supplemented or a control diet. The participants in the walnut group were provided with packaged walnuts (1, 1.5, or 2 oz. or ~15% of energy) and asked to incorporate them into their daily habitual diet. The participants in the control group were asked to continue with their habitual diet and abstain from eating walnuts and other tree nuts. Intake of n-3 fatty acid supplements was not permitted in either group. Fasting blood chemistries, blood pressure, and anthropometric measurements were obtained at baseline and at the end of intervention. A total of 625 participants (67% women, mean age 69.1 y) completed this two-year study (90% retention rate). Triglycerides decreased in both walnut (−0.94 mg/dl) and control (−0.96 mg/dl) groups, with no significant between-group differences. There was a non-significant decrease in systolic and diastolic blood pressure in the walnut group (−1.30 and −0.71 mm Hg, respectively) and no change in the control group. Fasting blood glucose decreased by ~1 point in both the walnut and control groups. There were no significant between-group differences in the development or reversion of MetS. In conclusion, supplementing the diet of older adults with a daily dose of walnuts had no effect on MetS status or any of its components, although the walnut group tended to have lower blood pressure.
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spelling pubmed-70712252020-03-19 Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort Al Abdrabalnabi, Ahmed Rajaram, Sujatha Bitok, Edward Oda, Keiji Beeson, W. Lawrence Kaur, Amandeep Cofán, Montserrat Serra-Mir, Mercè Roth, Irene Ros, Emilio Sabaté, Joan Nutrients Article Accumulating evidence links nut consumption with an improved risk of metabolic syndrome (MetS); however, long-term trials are lacking. We examined the effects of a daily dose of walnuts for two years on MetS in a large elderly cohort. A total of 698 healthy elderly participants were randomly assigned to either a walnut supplemented or a control diet. The participants in the walnut group were provided with packaged walnuts (1, 1.5, or 2 oz. or ~15% of energy) and asked to incorporate them into their daily habitual diet. The participants in the control group were asked to continue with their habitual diet and abstain from eating walnuts and other tree nuts. Intake of n-3 fatty acid supplements was not permitted in either group. Fasting blood chemistries, blood pressure, and anthropometric measurements were obtained at baseline and at the end of intervention. A total of 625 participants (67% women, mean age 69.1 y) completed this two-year study (90% retention rate). Triglycerides decreased in both walnut (−0.94 mg/dl) and control (−0.96 mg/dl) groups, with no significant between-group differences. There was a non-significant decrease in systolic and diastolic blood pressure in the walnut group (−1.30 and −0.71 mm Hg, respectively) and no change in the control group. Fasting blood glucose decreased by ~1 point in both the walnut and control groups. There were no significant between-group differences in the development or reversion of MetS. In conclusion, supplementing the diet of older adults with a daily dose of walnuts had no effect on MetS status or any of its components, although the walnut group tended to have lower blood pressure. MDPI 2020-02-11 /pmc/articles/PMC7071225/ /pubmed/32053984 http://dx.doi.org/10.3390/nu12020451 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Al Abdrabalnabi, Ahmed
Rajaram, Sujatha
Bitok, Edward
Oda, Keiji
Beeson, W. Lawrence
Kaur, Amandeep
Cofán, Montserrat
Serra-Mir, Mercè
Roth, Irene
Ros, Emilio
Sabaté, Joan
Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort
title Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort
title_full Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort
title_fullStr Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort
title_full_unstemmed Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort
title_short Effects of Supplementing the Usual Diet with a Daily Dose of Walnuts for Two Years on Metabolic Syndrome and Its Components in an Elderly Cohort
title_sort effects of supplementing the usual diet with a daily dose of walnuts for two years on metabolic syndrome and its components in an elderly cohort
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7071225/
https://www.ncbi.nlm.nih.gov/pubmed/32053984
http://dx.doi.org/10.3390/nu12020451
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