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      The effect of omega-3 fatty acid supplementation on weight loss and cognitive function in overweight or obese individuals on weight-loss diet Translated title: El efecto de la suplementación con ácidos grasos omega-3 sobre la pérdida de peso y las funciones cognitivas en personas con sobrepeso u obesidad en dieta para adelgazar

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          Abstract

          Abstract Objective: omega-3 polyunsaturated fatty acids (PUFAs) are important nutrients that play role in obesity, body lipids, inflammation, and neural function. There is controversy in studies on the effect of omega-3 PUFA supplementation on weight loss and cognitive function. The aim of this study was to investigate the effect of omega-3 PUFA supplementation on weight loss and cognitive function in obese or overweight adults on a weight loss diet. Methods: 40 adult volunteers aged 30-60 years, with body mass index (BMI) between 27.0 and 35.0 kg/m2, were randomly allocated into two groups. All subjects were involved in a weight loss diet program. The subjects in the omega-3 group (n = 20) also received daily supplementation with 1020 mg of omega-3 PUFAs (580 mg eicosapentaenoic acid (EPA), 390 mg docosahexaenoic acid (DHA), 50 mg other omega-3 PUFAs) for 12 weeks. Anthropometric measurements and body composition analysis were obtained at onset and at weeks 4, 8, and 12 of the study. The Montreal Cognitive Assessment (MoCA) test was used for evaluating cognitive functions at diet onset and at the end of week 12. Results: significant decreases were observed in weight, waist, and BMI in both groups. Abdominal fat mass and percentage decreased more in the omega-3 group than in the control group (p ≤ 0.05). MoCA scores increased in both groups within time, without statistical significance between groups. Conclusion: omega-3 PUFA supplementation augmented the reduction of abdominal fat mass and percentage in overweight or obese individuals on a weight loss diet. Further studies are required to identify the relationship and mechanisms of action of omega-3 PUFA supplementation on cognitive performance and weight loss.

          Translated abstract

          Resumen Objetivo: los ácidos grasos poliinsaturados (AGPI) omega-3 son nutrientes importantes que intervienen en la obesidad, los lípidos corporales, la inflamación y las funciones neuronales. Existe controversia en los estudios sobre el efecto de la suplementación con AGPI omega-3 sobre la pérdida de peso y las funciones cognitivas. El objetivo de este estudio fue investigar el efecto de la suplementación con ácidos grasos poliinsaturados omega-3 sobre la pérdida de peso y la función cognitiva en adultos obesos o con sobrepeso que siguen una dieta para adelgazar. Métodos: 40 voluntarios adultos de entre 30 y 60 años, con índice de masa corporal (IMC) entre 27,0 y 35,0 kg/m2, fueron distribuidos aleatoriamente en dos grupos. Todos los sujetos participaron en un programa de dieta para adelgazar. Los sujetos del grupo con omega-3 (n = 20) también recibieron suplementos diarios de 1020 mg de AGPI omega-3 (580 mg de ácido eicosapentaenoico (AEP), 390 mg de ácido docosahexaenoico (ADH), 50 mg de otros AGPI omega-3) durante 12 semanas. Las mediciones antropométricas y el análisis de la composición corporal se obtuvieron al inicio y a las 4, 8 y 12 semanas del estudio. La prueba de la “Evaluación Cognitiva de Montreal” (MoCA) se utilizó para evaluar las funciones cognitivas al inicio de la dieta y al final de la semana 12. Resultados: se observaron disminuciones significativas en el tiempo en el peso, la cintura y el IMC en ambos grupos. La masa y el porcentaje de grasa abdominal disminuyeron más en el grupo con omega-3 que en el de control (p ≤ 0,05). Las puntuaciones MoCA aumentaron en ambos grupos en el tiempo, sin significación estadística entre los grupos. Conclusión: la suplementación con ácidos grasos poliinsaturados omega-3 aumentó la reducción de la masa y el porcentaje de grasa abdominal en personas con sobrepeso u obesidad que siguieron una dieta para adelgazar. Se necesitan más estudios para identificar la relación y los mecanismos de acción de la suplementación con ácidos grasos poliinsaturados omega-3 sobre el rendimiento cognitivo y la pérdida de peso.

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          The Montreal Cognitive Assessment, MoCA: a brief screening tool for mild cognitive impairment.

          To develop a 10-minute cognitive screening tool (Montreal Cognitive Assessment, MoCA) to assist first-line physicians in detection of mild cognitive impairment (MCI), a clinical state that often progresses to dementia. Validation study. A community clinic and an academic center. Ninety-four patients meeting MCI clinical criteria supported by psychometric measures, 93 patients with mild Alzheimer's disease (AD) (Mini-Mental State Examination (MMSE) score > or =17), and 90 healthy elderly controls (NC). The MoCA and MMSE were administered to all participants, and sensitivity and specificity of both measures were assessed for detection of MCI and mild AD. Using a cutoff score 26, the MMSE had a sensitivity of 18% to detect MCI, whereas the MoCA detected 90% of MCI subjects. In the mild AD group, the MMSE had a sensitivity of 78%, whereas the MoCA detected 100%. Specificity was excellent for both MMSE and MoCA (100% and 87%, respectively). MCI as an entity is evolving and somewhat controversial. The MoCA is a brief cognitive screening tool with high sensitivity and specificity for detecting MCI as currently conceptualized in patients performing in the normal range on the MMSE.
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            An Increase in the Omega-6/Omega-3 Fatty Acid Ratio Increases the Risk for Obesity

            In the past three decades, total fat and saturated fat intake as a percentage of total calories has continuously decreased in Western diets, while the intake of omega-6 fatty acid increased and the omega-3 fatty acid decreased, resulting in a large increase in the omega-6/omega-3 ratio from 1:1 during evolution to 20:1 today or even higher. This change in the composition of fatty acids parallels a significant increase in the prevalence of overweight and obesity. Experimental studies have suggested that omega-6 and omega-3 fatty acids elicit divergent effects on body fat gain through mechanisms of adipogenesis, browning of adipose tissue, lipid homeostasis, brain-gut-adipose tissue axis, and most importantly systemic inflammation. Prospective studies clearly show an increase in the risk of obesity as the level of omega-6 fatty acids and the omega-6/omega-3 ratio increase in red blood cell (RBC) membrane phospholipids, whereas high omega-3 RBC membrane phospholipids decrease the risk of obesity. Recent studies in humans show that in addition to absolute amounts of omega-6 and omega-3 fatty acid intake, the omega-6/omega-3 ratio plays an important role in increasing the development of obesity via both AA eicosanoid metabolites and hyperactivity of the cannabinoid system, which can be reversed with increased intake of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). A balanced omega-6/omega-3 ratio is important for health and in the prevention and management of obesity.
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              Is the Montreal Cognitive Assessment (MoCA) test better suited than the Mini-Mental State Examination (MMSE) in mild cognitive impairment (MCI) detection among people aged over 60? Meta-analysis.

              Screening tests play a crucial role in dementia diagnostics, thus they should be very sensitive for mild cognitive impairment (MCI) assessment. Nowadays, the MiniMental State Examination (MMSE) is the most commonly used scale in cognitive function evaluation, albeit it is claimed to be imprecise for MCI detection. The Montreal Cognitive Assessment (MoCA), was created as an alternative method for MMSE. Aim. MoCA vs. MMSE credibility assessment in detecting MCI, while taking into consideration the sensitivity and specificity by cut-off points.
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                Author and article information

                Journal
                nh
                Nutrición Hospitalaria
                Nutr. Hosp.
                Grupo Arán (Madrid, Madrid, Spain )
                0212-1611
                1699-5198
                August 2022
                : 39
                : 4
                : 803-813
                Affiliations
                [2] Ankara orgnameGuven Hospital orgdiv1Department of Anesthesiology, Reanimation and Algology Turkey
                [1] Famagusta orgnameEastern Mediterranean University orgdiv1Faculty of Health Sciences orgdiv2Department of Nutrition and Dietetics Turkey
                Article
                S0212-16112022000600013 S0212-1611(22)03900400013
                10.20960/nh.03992
                35815739
                9dbebe99-141a-4f53-9dc4-0aee6016f92c

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 12 December 2021
                : 27 April 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 93, Pages: 11
                Product

                SciELO Spain

                Categories
                Original Papers

                ácidos grasos poliinsaturados,Cognitive functions,Weight loss,Diets,Polyunsaturated fatty acids,Omega-3,Funciones cognitivas,Dietas para adelgazar

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