2026-04-14T06:12:12Zhttps://recercat.cat/oai/request

oai:recercat.cat:10230/525462025-12-12T04:11:04Zcom_2072_6col_2072_452952

00925njm 22002777a 4500 dc Júlvez Calvo, Jordi author Gignac, Florence author Fernández-Barrés, Sílvia author Romaguera Bosch, Dora author Sala Vila, Aleix author Ranzani, Otavio author Persavento, Cecilia author Delgado, Ana author Carol, Albert author Torrent, Jaume author Gonzalez, Judith author Roso, Eduard author Barrera Gómez, Jose author López Vicente, Mònica, 1988- author Garcia-Esteban, Raquel author Forns i Guzman, Joan, 1981- author Burgaleta Díaz, Miguel, 1981- author Sebastián Gallés, Núria author Basagaña Flores, Xavier author Sunyer Deu, Jordi author 2022-02-23T07:33:13Z 2022-02-23T07:33:13Z 2021 Background: Adolescence, when the most complex behaviors are refined to adult sophistication, represents a major window of opportunity and vulnerability for neuropsychological development. To support and protect this complex and active brain growth, different nutritional components considered essential need to be acquired from the diet. For instance, omega-3 fatty acids are mainly obtained from seafood, seeds, and walnuts. Known for their rich lipid profile, walnuts contain sizable amounts of an essential fatty acid, alpha-linolenic acid (ALA), the vegetable omega-3 fatty acid that is the precursor of two longer-chain omega-3 polyunsaturated fatty acids (omega-3 PUFA): docosahexaenoic (DHA) and eicosapentaenoic (EPA) acids. While there is growing evidence of neuropsychological improvements in the young developing brain associated with omega-3 PUFA intake, few studies have examined whether consuming walnuts during adolescence entails similar beneficial effects. There is a need to further explore the ways in which walnuts influence youthful brain function, particularly for the long-term. Thus, we designed the WALNUTs study (WSS), a population-based randomized controlled trial conducted in adolescents in Barcelona, Spain. We hypothesize that walnut intake will increase omega-3 PUFA tissue availability (particularly ALA) to a level that enhances the neuropsychological development during adolescence. Methodology/Design: We conducted a 6-month population-based randomized controlled trial in teenagers (n = 800) and we aimed to determine the effectiveness of the intervention (four walnuts per day, or 30 kernel g, ~1.5g of ALA) in enhancing brain neuropsychological and socio-emotional development compared to a control group with no walnut intervention. Before randomization, different neuropsychological tests were recorded for all participants, and blood samples (in a subsample of participants) were collected to measure omega-3 PUFA levels at baseline, and all again, after randomization and the intervention. The data is now collected and we will conduct linear regression models to assess the effect of the intervention. Discussion: The WALNUTs (WSS) study results will allow us to better understand the role of plant-based omega-3 PUFA intake from regular walnut consumption on neuropsychological development during adolescence. Results could be translated into nutritional public health recommendations targeting teenagers. Trial Registration: ClinicalTrials.gov, U.S. National Library of Medicine, National Institutes of Health # NCT02590848. Retrospectively registered 29/10/2015. ALA Adolescence Dietary intervention Neuropsychological development Omega-3 PUFA Randomized controlled trial Walnuts Walnuts, long-chain polyunsaturated fatty acids, and adolescent brain development: protocol for the Walnuts Smart Snack dietary intervention trial