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This book, "Lipid Nutrition Guidelines: A Comprehensive Analysis" by Professor Harumi Okuyama et al [...].
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Gorduras na Dieta , Política Nutricional , Livros , Humanos , Ciências da Nutrição , Guias de Prática Clínica como AssuntoRESUMO
The health of the individual and the population in general is the result of interaction between genetics and various environmental factors, of which diet/nutrition is the most important. The focus of this paper is on the association of high n-6 PUFA or low n-3 PUFA due to genetic variation and/or dietary intake, with changes in specialized pro-resolving mediators (SPMs), cytokine storm, inflammation-resolution and Covid-19. Human beings evolved on a diet that was balanced in the n-6 and n-3 essential fatty acids with a ratio of n-6/n-3 of 1-2/1 whereas today this ratio is 16/1. Such a high ratio due to high amounts of n-6 fatty acids leads to a prothrombotic and proinflammatory state and is associated with obesity, diabetes, cardiovascular disease, and some forms of cancer. In addition to the high intake of n-6 fatty acids that increases inflammation there is genetic variation in the biosynthesis of n-6 linoleic acid (LA) to arachidonic acid (ARA) and of linolenic (ALA) to eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Present day humans have two common FADS haplotypes that differ dramatically in their ability to generate long-chain fatty acids. The more efficient, evolutionary derived haplotype increases the efficiency of synthesizing essential long-chain fatty acids from precursors and could have provided an advantage in environments with limited access to dietary long-chain fatty acids ARA, EPA and DHA. In the modern world this haplotype has been associated with lifestyle-related diseases, such as cardiovascular disease, obesity, diabetes, all of which are characterized by increased levels of inflammation. African Americans and Latino populations have increased susceptibility and higher death rates from SARS-CoV-2 than whites. These populations are characterized by increased numbers of persons (about 80%) that are fast metabolizers, leading to increased production of ARA, as well as poor intake of fruits and vegetables. The combinations of fast metabolism and high n-6 intake increases their inflammatory status and possibly susceptibility of SARS-CoV-2. In vitro and human studies indicate that the specialized pro-resolving mediators (SPM) produced from the n-3, EPA and DHA influence the resolution of inflammation, allowing the tissues to return to function and homeostasis. The SPMs each counter-regulate cytokine storms, as well as proinflammatory lipid mediators via NFκB and inflammasome down regulation and reduce the proinflammatory eicosanoids produced from ARA. The nutritional availability of dietary n-3 fatty acids from marine oils enriched with SPM intermediate precursors, along with increasing local biosynthesis of SPMs to functional concentrations may be an approach of value during SARS-CoV2 infections, as well as in prevention, and shortening their recovery from infections. It is evident that populations differ in their genetic variants and their frequencies and their interactions with the food they eat. Gene-nutrient interactions is a very important area of study that provides specific dietary advice for individuals and subgroups within a population in the form of Precision Nutrition. Nutritional science needs to focus on Precision Nutrition, genetic variants in the population and a food supply composed of Nutrients that have been part of our diet throughout evolution, which is the diet that our genes are programmed to respond.
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COVID-19/dietoterapia , COVID-19/genética , COVID-19/metabolismo , Ácidos Docosa-Hexaenoicos/metabolismo , Eicosanoides/metabolismo , Ácido Eicosapentaenoico/análogos & derivados , Ácido Eicosapentaenoico/metabolismo , Ácidos Graxos Essenciais/metabolismo , Ácidos Graxos Ômega-3/metabolismo , Predisposição Genética para Doença/genética , Haplótipos , Humanos , Inflamação/dietoterapia , Inflamação/genética , Inflamação/metabolismo , Ácido Linoleico/metabolismo , RNA Viral/genética , RNA Viral/metabolismo , SARS-CoV-2/patogenicidadeRESUMO
COVID-19, which is caused by SARS-CoV-2, is characterized by various symptoms, ranging from mild fatigue to life-threatening pneumonia, "cytokine storm," and multiorgan failure. The manifestation of COVID-19 may lead to a cytokine storm, i.e., it facilitates viral replication that triggers a strong release of cytokines, which then modulates the immune system and results in hyperinflammation. Today's diet is high in omega-6 fatty acids and deficient in omega-3 fatty acids; this, along with a high fructose intake, leads to obesity, which is a chronic state of low-grade inflammation. Omega-6 fatty acids are proinflammatory and prothrombotic whereas omega-3 fatty acids are less proinflammatory and thrombotic. Furthermore, omega-3 fatty acids make specialized lipid mediators, namely resolvins, protectins, and maresins, that are potent anti-inflammatory agents. Throughout evolution there was a balance between omega-6 and omega-3 fatty acids with a ratio of 1-2/1 omega-6/omega-3, but today this ratio is 16-20/1 omega-6/omega-3, leading to a proinflammatory state. In addition, genetic variants in FADS1, FADS2, ELOV-2, and ELOV-5 lead to a more efficient biosynthesis of long-chain polyunsaturated fatty acids (PUFAs), e.g., of linoleic acid (LA) to arachidonic acid (ARA), and (alpha-linolenic acid) (ALA) to eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), leading to higher ARA levels. Because the US diet is already high in omega-6 fatty acids, the increased biosynthesis of ARA in people with the derived FADS haplotype (haplotype D) leads to an increased production of leukotrienes, thromboxanes, C-reactive protein (CRP), and eventually elevated levels of cytokines, like interleukin (IL)-1, IL-6, and tumor necrosis factor (TNF), which may increase susceptibility to COVID-19. About 80% of African Americans, 50% of Hispanics, and 45% of European Americans have the FADS haplotype D and are thus efficient metabolizers, which could account for the higher vulnerability of these populations to COVID-19. Therefore, another reason that African Americans and Hispanics are more susceptible to COVID-19 is that they have a higher frequency of haplotype D, which is no longer beneficial in today's environment and diet. Genetic variation must be considered in all studies of disease development and therapy because it is important to the practice of precision nutrition by physicians and other health professionals. The objective of this commentary is to emphasize the importance of genetic variation within populations and its interaction with diet in the development of disease. Differences in the frequency of genes and their interactions with nutrients in various population groups must be considered among the factors contributing to health disparities in the development of COVID-19. A balanced omega-6/omega-3 ratio is essential to health. Physicians should measure their patients' fatty acids and recommend decreasing the intake of foods rich in omega-6 fatty acids and increasing the intake of omega-3 fatty acids along with fruits and vegetables.
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COVID-19/epidemiologia , Dieta , Variação Genética , Inflamação/complicações , COVID-19/genética , COVID-19/fisiopatologia , COVID-19/virologia , Síndrome da Liberação de Citocina , Dessaturase de Ácido Graxo Delta-5 , Gorduras na Dieta/administração & dosagem , Evolução Molecular , Humanos , Estilo de Vida , Obesidade/complicações , Fatores de Risco , SARS-CoV-2/isolamento & purificaçãoRESUMO
Background: Tissue availability of polyunsaturated fatty acids (PUFA) depends on several factors, including dietary intake, physical exercise, genetic variation, and metabolic turnover. However, there is limited evidence whether running training activity per se may influence indices associated with PUFA metabolism such as Omega-3 (ω-3) index and arachidonic acid (AA; 20:4ω-6)/eicosapentaenoic acid (EPA; 20:5ω-3) ratio. Objective: To examine the association between kilometers (Km) run per week and changes in ω-3 index and AA/EPA ratio. Methods: We conducted a retrospective, observational, cohort study of 257 non-elite runners (mean age: 40.85 ± 12.17 years) who consumed no fatty acid supplements and provided a blood sample for analysis. The whole blood samples were collected by finger sticks, stored on absorbent filter paper, and then PUFA were quantified by gas chromatography (GC) and ω-3 index and AA/EPA ratio measured. Results: In a multivariate linear regression model, a gradual decrease of the ω-3 index was observed with higher weekly running distance (ß = -0.033; 95% CI -0.039 to -0.026; R2 = 0.447; p < 0.0001). We also found a progressive increase of the AA/EPA ratio in subjects who ran greater weekly distances (ß = 0.092; 95% CI 0.038 to 0.146; R2 = 0.320; p = 0.001). No other significant associations were observed with other variables, including years of running training and weekly training frequency (hours/week). Finally, as expected, a significant inverse correlation between ω-3 index and AA/EPA ratio (ß = -2.614; 95% CI -3.407 to -1.821; R2 = 0.336; p < 0.0001) was detected. Conclusions: These findings suggest that distance running training and its weekly volume may negatively contribute to changes of the ω-3 index and AA/EPA ratio. Further studies with greater sample size will be required to replicate and extend these data.
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Diversity in the genetic profile between individuals and specific ethnic groups affects nutrient requirements, metabolism and response to nutritional and dietary interventions. Indeed, individuals respond differently to lifestyle interventions (diet, physical activity, smoking, etc.). The sequencing of the human genome and subsequent increased knowledge regarding human genetic variation is contributing to the emergence of personalized nutrition. These advances in genetic science are raising numerous questions regarding the mode that precision nutrition can contribute solutions to emerging problems in public health, by reducing the risk and prevalence of nutrition-related diseases. Current views on personalized nutrition encompass omics technologies (nutrigenomics, transcriptomics, epigenomics, foodomics, metabolomics, metagenomics, etc.), functional food development and challenges related to legal and ethical aspects, application in clinical practice, and population scope, in terms of guidelines and epidemiological factors. In this context, precision nutrition can be considered as occurring at three levels: (1) conventional nutrition based on general guidelines for population groups by age, gender and social determinants; (2) individualized nutrition that adds phenotypic information about the person's current nutritional status (e.g. anthropometry, biochemical and metabolic analysis, physical activity, among others), and (3) genotype-directed nutrition based on rare or common gene variation. Research and appropriate translation into medical practice and dietary recommendations must be based on a solid foundation of knowledge derived from studies on nutrigenetics and nutrigenomics. A scientific society, such as the International Society of Nutrigenetics/Nutrigenomics (ISNN), internationally devoted to the study of nutrigenetics/nutrigenomics, can indeed serve the commendable roles of (1) promoting science and favoring scientific communication and (2) permanently working as a 'clearing house' to prevent disqualifying logical jumps, correct or stop unwarranted claims, and prevent the creation of unwarranted expectations in patients and in the general public. In this statement, we are focusing on the scientific aspects of disciplines covering nutrigenetics and nutrigenomics issues. Genetic screening and the ethical, legal, social and economic aspects will be dealt with in subsequent statements of the Society.
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Nutrigenômica , Medicina de Precisão , Epigênese Genética , Perfilação da Expressão Gênica , Humanos , Metabolômica , Metagenômica , Política Nutricional , Proteômica , Sociedades CientíficasRESUMO
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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Tecido Adiposo/metabolismo , Dieta/efeitos adversos , Ácidos Graxos Ômega-3/efeitos adversos , Ácidos Graxos Ômega-6/efeitos adversos , Obesidade/epidemiologia , Tecido Adiposo/fisiopatologia , Adiposidade , Animais , Suplementos Nutricionais , Ácidos Graxos Ômega-3/metabolismo , Ácidos Graxos Ômega-6/metabolismo , Predisposição Genética para Doença , Humanos , Obesidade/genética , Obesidade/metabolismo , Obesidade/prevenção & controle , Fenótipo , Medição de Risco , Fatores de RiscoRESUMO
The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People was the result of a meeting held at the Rockefeller Foundation Bellagio Center in the fall of 2012. The meeting was science based but policy oriented. The Bellagio Report concluded that: (1) sugar consumption, especially in the form of high-energy fructose in soft drinks, poses a major and insidious health threat, particularly for children; (2) current diets in most populations, albeit with regional differences, are deficient in omega-3 fatty acids but too high in omega-6 fatty acid intake, and (3) not all calories are the same since calories from different sources (i.e. glucose or fructose or omega-6 or omega-3 fatty acids) have different metabolic and neurohormonal effects. This paper summarizes the scientific progress and policy actions that have occurred in these three areas. Genetic variation in populations and gene-nutrient interactions are fundamental concepts that need to be taken into consideration in growth and development and in the prevention and management of chronic noncommunicable diseases since there is enormous variation in both the frequency of genetic variants and dietary composition worldwide. Furthermore, this paper updates the Bellagio Report in terms of the scientific and policy aspects, both of which have expanded over the past 2 years, and describes the progress made in establishing an International Network of Centers for Genetics, Nutrition and Fitness for Health.
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Política Nutricional , Agricultura , Criança , Dieta/efeitos adversos , Gorduras na Dieta/administração & dosagem , Gorduras na Dieta/efeitos adversos , Sacarose Alimentar/administração & dosagem , Sacarose Alimentar/efeitos adversos , Ingestão de Alimentos , Ácidos Graxos Ômega-3/administração & dosagem , Ácidos Graxos Ômega-6/administração & dosagem , Ácidos Graxos Ômega-6/efeitos adversos , Saúde Global , Humanos , Itália , Nutrigenômica , Estado NutricionalRESUMO
Western diets are characterized by both dietary omega-3 fatty acid deficiency and increased fructose intake. The latter found in high amounts in added sugars such as sucrose and high fructose corn syrup (HFCS). Both a low intake of omega-3 fatty acids or a high fructose intake contribute to metabolic syndrome, liver steatosis or non-alcoholic fatty liver disease (NAFLD), promote brain insulin resistance, and increase the vulnerability to cognitive dysfunction. Insulin resistance is the core perturbation of metabolic syndrome. Multiple cognitive domains are affected by metabolic syndrome in adults and in obese adolescents, with volume losses in the hippocampus and frontal lobe, affecting executive function. Fish oil supplementation maintains proper insulin signaling in the brain, ameliorates NAFLD and decreases the risk to metabolic syndrome suggesting that adequate levels of omega-3 fatty acids in the diet can cope with the metabolic challenges imposed by high fructose intake in Western diets which is of major public health importance. This review presents the current status of the mechanisms involved in the development of the metabolic syndrome, brain insulin resistance, and NAFLD a most promising area of research in Nutrition for the prevention of these conditions, chronic diseases, and improvement of Public Health.
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Encéfalo/efeitos dos fármacos , Ácidos Graxos Ômega-3/sangue , Fígado Gorduroso/fisiopatologia , Frutose/efeitos adversos , Síndrome Metabólica/fisiopatologia , Animais , Encéfalo/fisiopatologia , Dieta , Suplementos Nutricionais , Modelos Animais de Doenças , Ácidos Graxos Ômega-3/administração & dosagem , Fígado Gorduroso/induzido quimicamente , Fígado Gorduroso/prevenção & controle , Óleos de Peixe/administração & dosagem , Frutose/administração & dosagem , Humanos , Insulina/sangue , Resistência à Insulina , Fígado/efeitos dos fármacos , Fígado/fisiopatologia , Síndrome Metabólica/induzido quimicamente , Síndrome Metabólica/prevenção & controle , Hepatopatia Gordurosa não Alcoólica , Edulcorantes/administração & dosagem , Edulcorantes/efeitos adversosRESUMO
The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy 30 October-1 November, 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCDs) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security.
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Agricultura , Alimentos Orgânicos , Programas Gente Saudável , Política Nutricional , HumanosAssuntos
Agricultura , Comportamentos Relacionados com a Saúde , Estado Nutricional , Humanos , ItáliaRESUMO
The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy 30 October-1 November, 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCDs) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security.
El Informe Bellagio sobre la actividad agropecuaria y la nutrición para la salud de las personas es el resultado de la reunión celebrada del 30 de octubre al 1 de noviembre del 2012 en el Centro Bellagio de la Fundación Rockefeller, ubicado a orillas del lago de Como (Italia). La reunión se basó en datos científicos, pero estuvo orientada a cuestiones de política. Se trataron ampliamente los temas de la función y la cantidad de las grasas saludables y las grasas poco saludables en los alimentos, con atención especial a su contenido relativo de ácidos grasos omega-3 y omega-6, y de azúcar, en particular fructosa, que pueden ser la causa de la epidemia de enfermedades no transmisibles en el mundo. El informe concluye que el consumo de azúcares, sobre todo en la forma de fructosa de alto contenido energético contenida en las bebidas gaseosas, supone una amenaza grave e insidiosa para la salud, especialmente en la niñez, y que la mayoría de los regímenes alimentarios, aunque con diferencias regionales, contienen cantidades insuficientes de ácidos grasos omega-3 y cantidades demasiado elevadas de ácidos grasos omega-6. Dado que las interacciones entre los genes y los nutrientes durante el crecimiento y el desarrollo, así como en la prevención de las enfermedades, son fundamentales para la salud, deben establecerse en todo el mundo centros regionales de genética, nutrición y buena condición física para promover la salud. Los jefes de Estado y de gobierno deben elevar la nutrición, con carácter de urgencia, al nivel de prioridad nacional, lograr que el acceso a un régimen alimentario saludable se considere un derecho humano, y hacer que la responsabilidad principal en materia de nutrición recaiga en los ministerios de salud, en lugar de en los ministerios de agricultura y ganadería, a fin de que las necesidades de salud orienten las prioridades agropecuarias, y no a la inversa. Debe asignarse a la seguridad nutricional la misma prioridad que a la seguridad alimentaria.
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Humanos , Criança , Agricultura , Promoção da Saúde , Política Nutricional , Ciências da Nutrição , Proteção da Criança , Dieta , Gorduras na Dieta , Sacarose Alimentar , Qualidade dos Alimentos , Frutose , Saúde , Itália , Distúrbios Nutricionais/prevenção & controle , Aptidão Física , Medicina PreventivaRESUMO
The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy, 29 October-2 November 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCD's) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, Nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for Nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security.
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Agricultura , Promoção da Saúde , Política Nutricional , Ciências da Nutrição , Criança , Proteção da Criança , Dieta , Gorduras na Dieta , Sacarose Alimentar , Ácidos Graxos Ômega-3 , Ácidos Graxos Ômega-6 , Qualidade dos Alimentos , Frutose , Saúde , Humanos , Itália , Distúrbios Nutricionais/prevenção & controle , Aptidão Física , Medicina PreventivaRESUMO
The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy, 29 October-2 November 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCD's) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, Nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for Nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security.
El informe del Bellagio sobre Agricultura Saludable, Nutrición Saludable, Población Saludable es el resultado de la reunión mantenida en el Centro Bellagio de la Fundación Rockefeller en el Lago de Como en Italia, entre el 29 de Octubre y el 2 de Noviembre de 2012. La reunión basada en la ciencia, fue orientada hacia la política. Se discutió extensamente el papel y la cantidad de grasas saludables y perjudiciales, con atención al contenido relativo de los ácidos grasos omega-3 y omega-6, el azúcar, y particularmente la fructosa en los alimentos que pueden conllevar la epidemia de enfermedades no transmisibles (EnT) a través del mundo. El informe concluye que el consumo del azúcar, especialmente en forma de fructosa de alta energía utiizada en bebidas refrescantes, posee una amenaza muy importante de la salud, especialmente en niños, y la mayoría de las dietas, aunque con diferencias regionales, son deficientes en ácidos grasos omega-3 y demasiado altas en ácidos grasos omega-6. Las interacciones gen-nutriente en el crecimiento y desarrollo y en la prevención de la enfermedad son fundamentales para la salud, por lo que deberían establecerse a través de todo el mundo Centros regionales de Genética, Nutrición y Condición Física para la Salud. Los jefes de estado y gobierno deben priorizar dentro de sus nacionales de forma urgente la Nutrición, cuyo acceso a una dieta saludable debería considerarse un derecho humano y dirigir la responsabilidad para que la Nutrición tenga un lugar en los Ministerios de Salud, más que la agricultura de modo que los requerimientos de salud conduzcan a prioridades agrícolas, y no viceversa. La seguridad nutricional debería ser considerada como prioridad como lo es la seguridad alimentaria.
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Agricultura/tendências , Ciências da Nutrição/tendências , Abastecimento de Alimentos , Humanos , Política Nutricional , Satisfação PessoalAssuntos
Evolução Biológica , Dieta , Ácidos Graxos Ômega-3/fisiologia , Ácidos Graxos Ômega-6/fisiologia , Envelhecimento , Animais , Doença Crônica , Gorduras na Dieta/administração & dosagem , Ácidos Graxos Ômega-3/sangue , Ácidos Graxos Ômega-6/sangue , Regulação da Expressão Gênica/efeitos dos fármacos , Humanos , Política Nutricional , Necessidades NutricionaisAssuntos
Agricultura , Dieta , Promoção da Saúde , Humanos , Nutrigenômica , Política Nutricional , Fenômenos Fisiológicos da NutriçãoRESUMO
Several sources of information suggest that human beings evolved on a diet that had a ratio of omega-6 to omega-3 fatty acids (FA) of about 1/1; whereas today, Western diets have a ratio of 10/1 to 20-25/1, indicating that Western diets are deficient in omega-3 FA compared with the diet on which humans evolved and their genetic patterns were established. Omega-6 and omega-3 FA are not interconvertible in the human body and are important components of practically all cell membranes. Studies with nonhuman primates and human newborns indicate that docosahexaenoic acid (DHA) is essential for the normal functional development of the brain and retina, particularly in premature infants. DHA accounts for 40% of the membrane phospholipid FA in the brain. Both eicosapentaenoic acid (EPA) and DHA have an effect on membrane receptor function and even neurotransmitter generation and metabolism. There is growing evidence that EPA and DHA could play a role in hostility and violence in addition to the beneficial effects in substance abuse disorders and alcoholism. The balance of omega-6 and omega-3 FA is important for homeostasis and normal development throughout the life cycle.
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Evolução Biológica , Encéfalo/fisiologia , Dieta , Gorduras na Dieta/metabolismo , Ácidos Graxos Ômega-3/metabolismo , Ácidos Graxos Ômega-6/metabolismo , Envelhecimento/fisiologia , Animais , Aterosclerose/fisiopatologia , Cognição/fisiologia , Humanos , Inflamação/fisiopatologia , Transtornos Relacionados ao Uso de SubstânciasRESUMO
Higher adherence to a Mediterranean diet (MeDi) and n-3 PUFA may both contribute to decreased dementia risk, but the association between MeDi adherence and lipid status is unclear. The aim of the present study was to analyse the relationship between plasma fatty acids and MeDi adherence in French elderly community dwellers. The study population (mean age 75·9 years) consisted of 1050 subjects from Bordeaux (France) included in the Three-City cohort. Adherence to the MeDi (scored as 0-9) was computed from a FFQ and 24 h recall. The proportion of each plasma fatty acid was determined. Cross-sectional analysis of the association between plasma fatty acids and MeDi adherence was performed by multi-linear regression. After adjusting for age, sex, energy intake, physical activity, smoking status, BMI, plasma TAG and apoE-É4 genotype, plasma palmitoleic acid was significantly inversely associated with MeDi adherence, whereas plasma DHA, the EPA+DHA index and total n-3 PUFA were positively associated with MeDi adherence. The n-6:n-3 PUFA, arachidonic acid (AA):EPA, AA:DHA and AA:(EPA+DHA) ratios were significantly inversely associated with MeDi adherence. Plasma EPA was positively associated with MeDi adherence only in apoE-É4 non-carriers. There was no association between MeDi adherence and SFA and total MUFA. The present results suggest that the protective effect of the MeDi on cognitive functions might be mediated by higher plasma DHA and lower n-6:n-3 PUFA ratios.