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Favourable nutrient intake and displacement with long-term walnut supplementation among elderly: results of a randomised trial.
Br J Nutr. 2017 Aug; 118(3):201-209.BJ

Abstract

Older adults tend to require fewer energy content and higher levels of nutrients to promote and maintain optimal health. Regrettably, dietary variety and quality are known to decline with advancing age. We conducted a 2-year prospective, randomised, dietary intervention trial where we asked free-living elderly subjects (63-79 years) on self-selected habitual diets to incorporate walnuts daily into their diet (15 % energy). We then compared their nutrient intake with that of a similar group of concurrent participants on self-selected habitual diets but abstaining from walnut consumption (control). No recipes or advice on use of nuts were provided. Dietary intake was assessed by multiple unannounced 24-h telephone dietary recalls. On average, walnut supplement consumption was 43 g/d or 1171·5 kJ (281 kcal). The mean daily energy intake was 954 kJ (228 kcal) higher in the walnut group than in the control group (P<0·001). Compared with control, participants in the walnut group reported significantly higher intake of total protein, vegetable protein, total PUFA and n-3 and n-6 PUFA; and significantly lower intake of total carbohydrate, animal protein, SFA, and Na. An estimated 19 % of total energy and 25 % of total fat from other food sources was displaced. Displacement of MUFA and total PUFA was 21 and 16 %, respectively. Thus adding a daily supplement of walnuts to an ad libitum diet of older adults can induce favourable modifications to the nutrient profile in a way that addresses declining nutrient intake associated with aging.

Authors+Show Affiliations

1School of Public Health,Center for Nutrition, Lifestyle, and Disease Prevention,Loma Linda University,Loma Linda,CA 92350,USA.1School of Public Health,Center for Nutrition, Lifestyle, and Disease Prevention,Loma Linda University,Loma Linda,CA 92350,USA.1School of Public Health,Center for Nutrition, Lifestyle, and Disease Prevention,Loma Linda University,Loma Linda,CA 92350,USA.2Lipid Clinic,Endocrinology and Nutrition Services,Institut d'Investigacions Biomèdiques August Pi I Sunyer,Hospital Clínic, 08036Barcelona,Spain.2Lipid Clinic,Endocrinology and Nutrition Services,Institut d'Investigacions Biomèdiques August Pi I Sunyer,Hospital Clínic, 08036Barcelona,Spain.2Lipid Clinic,Endocrinology and Nutrition Services,Institut d'Investigacions Biomèdiques August Pi I Sunyer,Hospital Clínic, 08036Barcelona,Spain.2Lipid Clinic,Endocrinology and Nutrition Services,Institut d'Investigacions Biomèdiques August Pi I Sunyer,Hospital Clínic, 08036Barcelona,Spain.1School of Public Health,Center for Nutrition, Lifestyle, and Disease Prevention,Loma Linda University,Loma Linda,CA 92350,USA.

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

28831957

Citation

Bitok, Edward, et al. "Favourable Nutrient Intake and Displacement With Long-term Walnut Supplementation Among Elderly: Results of a Randomised Trial." The British Journal of Nutrition, vol. 118, no. 3, 2017, pp. 201-209.
Bitok E, Jaceldo-Siegl K, Rajaram S, et al. Favourable nutrient intake and displacement with long-term walnut supplementation among elderly: results of a randomised trial. Br J Nutr. 2017;118(3):201-209.
Bitok, E., Jaceldo-Siegl, K., Rajaram, S., Serra-Mir, M., Roth, I., Feitas-Simoes, T., Ros, E., & Sabaté, J. (2017). Favourable nutrient intake and displacement with long-term walnut supplementation among elderly: results of a randomised trial. The British Journal of Nutrition, 118(3), 201-209. https://doi.org/10.1017/S0007114517001957
Bitok E, et al. Favourable Nutrient Intake and Displacement With Long-term Walnut Supplementation Among Elderly: Results of a Randomised Trial. Br J Nutr. 2017;118(3):201-209. PubMed PMID: 28831957.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Favourable nutrient intake and displacement with long-term walnut supplementation among elderly: results of a randomised trial. AU - Bitok,Edward, AU - Jaceldo-Siegl,Karen, AU - Rajaram,Sujatha, AU - Serra-Mir,Mercè, AU - Roth,Irene, AU - Feitas-Simoes,Tania, AU - Ros,Emilio, AU - Sabaté,Joan, PY - 2017/8/24/entrez PY - 2017/8/24/pubmed PY - 2017/9/8/medline KW - ALA α-linolenic acid KW - Diet quality KW - Nutrient displacement KW - Nuts KW - Walnuts SP - 201 EP - 209 JF - The British journal of nutrition JO - Br. J. Nutr. VL - 118 IS - 3 N2 - Older adults tend to require fewer energy content and higher levels of nutrients to promote and maintain optimal health. Regrettably, dietary variety and quality are known to decline with advancing age. We conducted a 2-year prospective, randomised, dietary intervention trial where we asked free-living elderly subjects (63-79 years) on self-selected habitual diets to incorporate walnuts daily into their diet (15 % energy). We then compared their nutrient intake with that of a similar group of concurrent participants on self-selected habitual diets but abstaining from walnut consumption (control). No recipes or advice on use of nuts were provided. Dietary intake was assessed by multiple unannounced 24-h telephone dietary recalls. On average, walnut supplement consumption was 43 g/d or 1171·5 kJ (281 kcal). The mean daily energy intake was 954 kJ (228 kcal) higher in the walnut group than in the control group (P<0·001). Compared with control, participants in the walnut group reported significantly higher intake of total protein, vegetable protein, total PUFA and n-3 and n-6 PUFA; and significantly lower intake of total carbohydrate, animal protein, SFA, and Na. An estimated 19 % of total energy and 25 % of total fat from other food sources was displaced. Displacement of MUFA and total PUFA was 21 and 16 %, respectively. Thus adding a daily supplement of walnuts to an ad libitum diet of older adults can induce favourable modifications to the nutrient profile in a way that addresses declining nutrient intake associated with aging. SN - 1475-2662 UR - https://www.unboundmedicine.com/medline/citation/28831957/Favourable_nutrient_intake_and_displacement_with_long_term_walnut_supplementation_among_elderly:_results_of_a_randomised_trial_ L2 - https://www.cambridge.org/core/product/identifier/S0007114517001957/type/journal_article DB - PRIME DP - Unbound Medicine ER -