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Obesity is a major public health challenge, in Spain the prevalence of excess of weight and obesity and is 56 % and 19 %, respectively, and it is linked to numerous preventable chronic diseases. Nutritional epidemiology focused on nutrients has evolved towards the study of dietary patterns that consider synergistic interactions between foods and nutrients. This study aims to investigate the relationship between obesity and its treatment by healthy dietary patterns. The Mediterranean diet and Dietary Approaches to Stop Hypertension (DASH), based on plant products, whole grains and low levels of salt, sugars and red meat, have been shown to promote weight loss and reduce comorbidities associated with obesity. Although vegetarian and vegan diets are adequate options for disease management and prevention, they require planning to avoid nutritional deficiencies. In conclusion, healthy dietary patterns such as the Mediterranean diet, DASH and vegetarian options are effective in both the prevention and treatment of obesity, highlighting the importance of considering the synergy between foods and nutrients in the management of this health condition.

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Yogurt has been valued very positively for centuries, but the concern for food sustainability and the fact that it is a food of animal origin has raised doubts about the consumption that may be convenient. The objective of this work is to deepen the topic and establish recommendations for the population. From the nutritional point of view, yogurt is a valuable food, for its high content, quality and bioavailability of its nutrients, in a low energy content, its components together with probiotic microorganisms are provided in a matrix that helps achieve greater nutritional and health benefit. Regular consumption of yogurt has been linked to cardiovascular protection, against diabetes, excess weight, cancer, bone health. Thinking about environmental sustainability, yogurt production is not particularly dangerous, as the kg of CO2 eq (greenhouse gases) associated with their production are the lowest obtained compared to other animal foods and even lower than those associated with the production of some plant foods and the supply of nutrients per 1000 kcal, per 100 g, or per euro is one of the highest available. There is the possibility to further improve sustainability with improvements in animal feed, packaging, transport, etc. Considering this evidence, the daily consumption of yogurt / fermented milk should be included in the food guidelines, not only as one more milk option, but specifying a specific consumption such as a ration / day, this pattern can be useful from the nutritional point of view and for the improvement of public health.

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Interest in the relationship between diet and cognitive function has increased in recent years. In this sense, eggs contain many essential nutrients that are also beneficial for cognitive function. Several studies have shown that moderate egg consumption not only does not increase cardiovascular risk but is positively associated with better cognitive performance and a lower risk of dementia. Egg protein is particularly rich in tryptophan, which is a precursor to serotonin, the neurotransmitter involved in mood, and melatonin, the hormone that regulates the sleep-wake cycle. Consumption of tryptophan-rich egg hydrolysates has been associated with improved attention and reduced feelings of sadness or depression. Egg choline is needed for the synthesis of acetylcholine, the neurotransmitter involved in memory and learning, and also for the synthesis of phosphatidylcholine, the intake of which has been linked to better mental function and a lower risk of dementia in adults. Choline intake during pregnancy reduces the risk of neural tube defects and is associated with better offspring development. And lutein and zeaxanthin, which are particularly concentrated in the nervous system, are associated with better visual function and cognitive development in the offspring and also in the elderly. All this evidence confirms the importance of including eggs in a balanced diet to prevent cognitive decline and improve cognitive health throughout life.

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BACKGROUND: Childhood overweight and obesity is a global concern and has increased in Spain over the last decades. Combinations of lifestyle behaviors (i.e., diet, sleep, and sedentarism) are highly related to weight status. Therefore, this study aimed to identify lifestyle patterns among children from Madrid City, and analyze associations with the prevalence of overweight, obesity, and abdominal obesity, considering socio-economic factors. METHODS: A cross-sectional analysis was conducted on 4545 children from the ENPIMAD study with data on diet, sleep, anthropometric, and socio-economic variables. K-means cluster analysis was used to identify lifestyle clusters, and logistic regressions were used to examine the associations between socio-economic indicators and cluster membership, and between clusters and weight status. RESULTS: Findings show three lifestyle clusters (healthy, mixed, and unhealthy), with boys and older children more represented in the unhealthy cluster. Food insecurity and low socio-economic status were associated with unhealthier clusters in boys and girls. Children in unhealthier clusters were more likely to have obesity and abdominal obesity. However, these associations disappeared in girls after controlling for food insecurity. CONCLUSION: These results provide insight into the combination of behaviors and socio-economic factors associated with childhood obesity that may aid in the design of future interventions.

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OBJECTIVES: Innovative precision dietary procedures are required to promote healthy aging. This study aimed to evaluate the effects of a personalised strategy based on the inclusion of individualised foods and digital tools on overall health status and quality of life within a follow-up of 3 months in older adults with overweight or obesity. METHODS: 127 men and women aged between 50 and 80 years with overweight/obesity participated in the study-between January 2020 and September 2020 at the Center for Nutrition Research-University of Navarra and IMDEA-ALIMENTACIÓN-and were randomly assigned to a usual-care group (standard recommendations) or precision group (precision nutrition strategy based on the inclusion of individualised foods and a mobile application). Anthropometry, body fat percentage, biochemical parameters, diet, and quality of life (SF-36 Health Survey) were assessed at baseline and after 3 months. RESULTS: Both strategies were found to improve overall metabolic health; however, the precision approach demonstrated significantly better outcomes. The precision strategy reduced body weight at 3 months (-4.3 kg; p < 0.001) with significant improvements in body fat percentage, blood pressure and general metabolic health (glycated haemoglobin; alanine aminotransferase; aspartate aminotransferase; hepatic steatosis index) in comparison with the standard recommendations. The precision approach significantly enhanced the quality of life (SF-36) of individuals, with additional improvements in emotional well-being (p = 0.024) and vitality (p = 0.008). Adherence to the Mediterranean diet was significantly associated with a higher quality of life and vitality. CONCLUSION: These results support the benefit of precision nutrition approaches for promoting healthy aging and emotional well-being, enhancing the quality of life in aging populations, during the COVID-19 pandemic.

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Proteins are macronutrients with multiple health benefits, but excessive consumption can negatively affect health. This study aimed to evaluate the characteristics of a sample of high-protein processed foods (HPPFs), describe how their consumption affects dietary balance, and acquire knowledge of the consumption patterns of these products in a Spanish population. A sample of HPPFs available in supermarkets and on websites was collected. The contribution to recommended protein intakes was calculated using national and international references and considering the single consumption of the HPPFs and the product plus 150 g of meat. Furthermore, an online survey was conducted among a convenience sample. A total of 36 enriched protein products were evaluated. The percentage of proteins in these products ranges from 10 to 88%. The contribution of the protein recommended intake was within a range of 87.4-306.6% and 66.4-232.8% (women and men, respectively), only considering the additional proteins from 150 g of meat. One hundred thirty-nine participants completed the survey; 67.6% affirmed that they had consumed HPPFs, and half consumed them without following any consumption control. Since these products are accessible to everyone in supermarkets and protein intake is generally higher than the recommended limits, regulating the mass sale of HPPFs is essential to ensure they do not lead to protein overconsumption.

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Anorexia nervosa (AN) is a multifactorial disorder. A possible role of the social network and the gut microbiota in pathogenesis has been added. Exogenous shocks such as the COVID19 pandemic have had a negative impact on patients with AN. The potential medical and nutritional impact of malnutrition and/or compensatory behaviors gives rise to a complex disease with a wide range of severity, the management of which requires a multidisciplinary team with a high level of subject matter expertise. Coordination between levels of care is necessary as well as understanding how to transition the patient from pediatric to adult care is essential. A proper clinical evaluation can detect possible complications, as well as establish the organic risk of the patient. This allows caregivers to tailor the medical-nutritional treatment for each patient. Reestablishing adequate nutritional behaviors is a fundamental pillar of treatment in AN. The design of a personalized nutritional treatment and education program is necessary for this purpose. Depending on the clinical severity, artificial nutrition may be necessary. Although the decision regarding the level of care necessary at diagnosis or during follow-up depends on a number of factors (awareness of the disease, medical stability, complications, suicidal risk, outpatient treatment failure, psychosocial context, etc.), outpatient treatment is the most frequent and most preferred choice. However, more intensive care (total or partial hospitalization) may be necessary in certain cases. In severely malnourished patients, the appearance of refeeding syndrome should be prevented during renourishment. The presence of AN in certain situations (pregnancy, vegetarianism, type 1 diabetes mellitus) requires specific care. Physical activity in these patients must also be addressed correctly.

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La anorexia nerviosa (AN) es una enfermedad de origen multifactorial. Recientemente se ha sumado el papel de las redes sociales y la microbiota intestinal en la patogenia. La pandemia por COVID-19 ha tenido un impacto negativo en los pacientes con AN. La potencial afectación médica y nutricional derivada de la desnutrición o las conductas compensatorias dan lugar a una compleja enfermedad de gravedad variable, cuyo manejo precisa un equipo multidisciplinar con elevado nivel de conocimientos en la materia. Es fundamental la coordinación entre niveles asistenciales y en la transición de pediatría a adultos. Una adecuada valoración clínica permite detectar eventuales complicaciones, así como establecer el riesgo orgánico del paciente y, por tanto, adecuar el tratamiento médico-nutricional de forma individualizada. El restablecimiento de un apropiado estado nutricional es un pilar fundamental del tratamiento en la AN. Para ello es necesario diseñar una intervención de renutrición individualizada que incluya un programa de educación nutricional. Según el escenario clínico puede ser necesaria la nutrición artificial. Aunque la decisión de qué nivel de atención escoger al diagnóstico o durante el seguimiento depende de numerosas variables (conciencia de enfermedad, estabilidad médica, complicaciones, riesgo autolítico, fracaso del tratamiento ambulatorio o contexto psicosocial, entre otros), el tratamiento ambulatorio es de elección en la mayoría de las ocasiones. No obstante, puede ser necesario un escenario más intensivo (hospitalización total o parcial) en casos seleccionados. En pacientes gravemente desnutridos debe prevenirse la aparición de un síndrome de alimentación cuando se inicia la renutrición. La presencia de una AN en determinadas situaciones (gestación, vegetarianismo, diabetes mellitus de tipo 1, etc.) exige un manejo particular. En estos pacientes también debe abordarse de forma correcta el ejercicio físico.(AU)

Anorexia nervosa (AN) is a multifactorial disorder. A possible role of the social network and the gut microbiota in pathogenesis has been added.Exogenous shocks such as the COVID19 pandemic have had a negative impact on patients with AN.The potential medical and nutritional impact of malnutrition and/or compensatory behaviors gives rise to a complex disease with a wide range ofseverity, the management of which requires a multidisciplinary team with a high level of subject matter expertise. Coordination between levelsof care is necessary as well as understanding how to transition the patient from pediatric to adult care is essential. A proper clinical evaluationcan detect possible complications, as well as establish the organic risk of the patient. This allows caregivers to tailor the medical-nutritionaltreatment for each patient.Reestablishing adequate nutritional behaviors is a fundamental pillar of treatment in AN. The design of a personalized nutritional treatment andeducation program is necessary for this purpose. Depending on the clinical severity, artificial nutrition may be necessary. Although the decisionregarding the level of care necessary at diagnosis or during follow-up depends on a number of factors (awareness of the disease, medical stability,complications, suicidal risk, outpatient treatment failure, psychosocial context, etc.), outpatient treatment is the most frequent and most preferredchoice. However, more intensive care (total or partial hospitalization) may be necessary in certain cases. In severely malnourished patients, theappearance of refeeding syndrome should be prevented during renourishment.The presence of AN in certain situations (pregnancy, vegetarianism, type 1 diabetes mellitus) requires specific care. Physical activity in thesepatients must also be addressed correctly.(AU)

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Introduction: Anorexia nervosa (AN) is a multifactorial disorder. A possible role of the social network and the gut microbiota in pathogenesis has been added. Exogenous shocks such as the COVID19 pandemic have had a negative impact on patients with AN. The potential medical and nutritional impact of malnutrition and/or compensatory behaviors gives rise to a complex disease with a wide range of severity, the management of which requires a multidisciplinary team with a high level of subject matter expertise. Coordination between levels of care is necessary as well as understanding how to transition the patient from pediatric to adult care is essential. A proper clinical evaluation can detect possible complications, as well as establish the organic risk of the patient. This allows caregivers to tailor the medical-nutritional treatment for each patient. Reestablishing adequate nutritional behaviors is a fundamental pillar of treatment in AN. The design of a personalized nutritional treatment and education program is necessary for this purpose. Depending on the clinical severity, artificial nutrition may be necessary. Although the decision regarding the level of care necessary at diagnosis or during follow-up depends on a number of factors (awareness of the disease, medical stability, complications, suicidal risk, outpatient treatment failure, psychosocial context, etc.), outpatient treatment is the most frequent and most preferred choice. However, more intensive care (total or partial hospitalization) may be necessary in certain cases. In severely malnourished patients, the appearance of refeeding syndrome should be prevented during renourishment. The presence of AN in certain situations (pregnancy, vegetarianism, type 1 diabetes mellitus) requires specific care. Physical activity in these patients must also be addressed correctly.

Introducción: La anorexia nerviosa (AN) es una enfermedad de origen multifactorial. Recientemente se ha sumado el papel de las redes sociales y la microbiota intestinal en la patogenia. La pandemia por COVID-19 ha tenido un impacto negativo en los pacientes con AN. La potencial afectación médica y nutricional derivada de la desnutrición o las conductas compensatorias dan lugar a una compleja enfermedad de gravedad variable, cuyo manejo precisa un equipo multidisciplinar con elevado nivel de conocimientos en la materia. Es fundamental la coordinación entre niveles asistenciales y en la transición de pediatría a adultos. Una adecuada valoración clínica permite detectar eventuales complicaciones, así como establecer el riesgo orgánico del paciente y, por tanto, adecuar el tratamiento médico-nutricional de forma individualizada. El restablecimiento de un apropiado estado nutricional es un pilar fundamental del tratamiento en la AN. Para ello es necesario diseñar una intervención de renutrición individualizada que incluya un programa de educación nutricional. Según el escenario clínico puede ser necesaria la nutrición artificial. Aunque la decisión de qué nivel de atención escoger al diagnóstico o durante el seguimiento depende de numerosas variables (conciencia de enfermedad, estabilidad médica, complicaciones, riesgo autolítico, fracaso del tratamiento ambulatorio o contexto psicosocial, entre otros), el tratamiento ambulatorio es de elección en la mayoría de las ocasiones. No obstante, puede ser necesario un escenario más intensivo (hospitalización total o parcial) en casos seleccionados. En pacientes gravemente desnutridos debe prevenirse la aparición de un síndrome de alimentación cuando se inicia la renutrición. La presencia de una AN en determinadas situaciones (gestación, vegetarianismo, diabetes mellitus de tipo 1, etc.) exige un manejo particular. En estos pacientes también debe abordarse de forma correcta el ejercicio físico.

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Introduction: Breast cancer is the most prevalent tumor in women, ranking first in incidence and mortality in many countries. Although the causes of breast cancer are complex and multifactorial, nutritional factors and those related to nutritional status play an important role in the development of the disease. In this way, factors that increase breast cancer risk have been identified, such as weight gain, the amount of adipose tissue, waist circumference, alcohol consumption or the consumption of red meat and processed meat, while other factors have been identified that reduce the risk, such as eating fruits and vegetables. Nutritional factors or factors that depend on the state of nutrition are modifiable and preventable, so they must be considered when designing effective prevention programs.

Introducción: El cáncer de mama es el tumor más prevalente en las mujeres y ocupa el primer lugar en incidencia y en mortalidad en muchos países. Si bien las causas del cáncer de mama son complejas y multifactoriales, los factores nutricionales y aquellos relacionados con el estado nutricional juegan un papel importante en el desarrollo de la enfermedad. De esta forma, se han identificado algunos factores que aumentan su riesgo, como el aumento de peso, la cantidad de tejido adiposo, la circunferencia de cintura, el consumo de alcohol, etc., o bien, que lo reducen, como el consumo de frutas y verduras. Los factores nutricionales o que dependen del estado de nutrición son modificables y prevenibles, por lo que deben tenerse en cuenta al diseñar programas de prevención eficaces.

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Introduction: Insulin resistance is described as a defect in the binding of insulin to its receptor and is associated with several diseases, including obesity and type 2 diabetes. Insulin resistance has been linked to vitamin and mineral deficiencies, especially those involved in oxidative stress. The Mediterranean diet, a diet based on the Healthy Eating Index or the Dietary Approaches to Stop Hypertension (DASH) diet are dietary patterns that have been associated with a lower risk of developing insulin resistance in children. Therefore, a diet rich in antioxidant vitamins and minerals, fiber, calcium, and polyunsaturated fatty acids and low in free sugars, sodium and saturated fatty acids may decrease the risk of insulin resistance in this age group. In addition, other nutritional factors, such as avoiding fast food, eating dinner with the family, not eating while watching TV or eating a sufficient and healthy breakfast on a regular basis seem to be associated with a lower risk of insulin resistance. Therefore, it is important to establish balanced daily eating habits to prevent and treat insulin resistance in schoolchildren and adolescents.

Introducción: La resistencia a la insulina se explica como un defecto en la unión de la insulina con su receptor y está asociada con numerosas enfermedades, como la obesidad o la diabetes tipo 2, entre otras. La resistencia a la insulina se ha relacionado con la deficiencia de vitaminas y minerales, especialmente de aquellos involucrados en el estrés oxidativo. La dieta mediterránea, una dieta basada en el Healthy Eating Index o la dieta Dietary Approaches to Stop Hypertension (DASH) son patrones dietéticos que se han asociado con un menor riesgo de presentar resistencia a la insulina en edad infantil. Por tanto, una dieta rica en vitaminas y minerales antioxidantes, fibra, calcio y ácidos grasos poliinsaturados y baja en azucares libres, sodio y ácidos grasos saturados puede disminuir el riesgo de presentar resistencia a la insulina en este grupo de edad. Además, otros factores nutricionales, como evitar la comida rápida, cenar en familia, no comer mientras se ve la televisión o el consumo regular de un desayuno suficiente y saludable son hábitos que parecen estar relacionados con menor riesgo de presentar resistencia a la insulina. Por tanto, es importante establecer hábitos alimentarios diarios equilibrados para prevenir y tratar la resistencia a la insulina en escolares y adolescentes.

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Introduction: Intermittent fasting is a dietary pattern characterized by alternating periods of total or partial fasting and ad libitum food consumption. During prolonged fasting, the body uses the ketone bodies formed from lipolysis of body fat, which also leads to some metabolic modifications with positive effects on health. In this sense, nocturnal intermittent fasting could contribute to properly synchronize the circadian system making the physiological, hormonal, energetic and metabolic processes work correctly and keeping to the individual in homeostasis. Thus, according to the results of different studies, intermittent fasting, in the short-medium term, seems to improve body composition, as well as the values of several cardiometabolic parameters such as insulin and HOMA-IR index, among others. These effects have been observed in both pre- and postmenopausal women (no differences have been found between both states) and are similar to those found in interventions with caloric restriction diets.

Introducción: El ayuno intermitente es un patrón dietético caracterizado por la alternancia de periodos de ayuno, totales o parciales, y de consumo de alimentos ad libitum. Durante el ayuno prolongado, el organismo utiliza los cuerpos cetónicos que se forman a partir de la lipolisis de la grasa del organismo, lo que también da lugar a algunas modificaciones metabólicas con efectos positivos para la salud. En este sentido, el ayuno intermitente nocturno podría contribuir a sincronizar adecuadamente el sistema circadiano, haciendo que los procesos fisiológicos, hormonales, energéticos y metabólicos funcionen correctamente y mantengan al individuo en homeostasis. Así, de acuerdo con los resultados de diferentes estudios, el ayuno intermitente, a corto-medio plazo, parece mejorar la composición corporal, así como los valores de diversos parámetros cardiometabólicos como la insulina y el índice HOMA-IR, entre otros. Estos efectos se han observado tanto en mujeres premenopáusicas como postmenopáusicas, sin hallar diferencias entre ambos estados y son similares a los encontrados con intervenciones con dietas con restricción calórica.

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Introduction: Anorexia nervosa (AN) is a psychiatric disease with a high prevalence and comorbidities, characterized by a low response rate to treatment. It is considered as a multifactorial disease. In recent years, the focus has been placed on the presence of intestinal dysbiosis and its possible involvement as a causal factor as well as an alternative treatment. The objective of this work has been to review the current state of knowledge of alterations in the intestinal microbiota identified in patients with AN and the possibility of using probiotics as a therapeutic alternative. Significant changes in the diversity of species associated with weight loss have been described that could favor the perpetuation of the disorder, and that would explain many of the nutritional, gastrointestinal, psychological, and cognitive alterations present in these patients. The use of probiotics, still little studied in patients with AN, sheds some light on this matter to improve the treatment response, always hand in hand with conventional treatments.

Introducción: La anorexia nerviosa (AN) es una enfermedad psiquiátrica, con elevada prevalencia y comorbilidades, caracterizada por una baja tasa de respuesta al tratamiento. Se considera una enfermedad multifactorial. En los últimos años se ha puesto el foco en la presencia de disbiosis intestinal y su posible implicación como factor causal, así como alternativa de tratamiento. El objetivo de este trabajo ha sido revisar el estado actual del conocimiento de las alteraciones en la microbiota intestinal identificadas en pacientes con AN y la posibilidad del uso de probióticos como alternativa terapéutica. Se han descrito importantes cambios en la diversidad de las especies asociadas a la pérdida de peso que podrían contribuir a perpetuar el trastorno y que explicarían muchas de las alteraciones nutricionales, gastrointestinales, psicológicas y cognitivas presentes en estos pacientes. El uso de probióticos, poco estudiado aún en pacientes con AN, abre una nueva ventana para mejorar la respuesta, siempre de la mano de los tratamientos convencionales.

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Introducción: los trastornos de la conducta alimentaria (TCA) suponen un reto terapéutico. Objetivo: describir la asistencia a los TCA desde la perspectiva de las unidades de nutrición clínica y dietética (UNCyD) en relación con los recursos humanos y asistenciales, las actividades realizadas y la satisfacción con la atención en España; recoger demandas de los profesionales para mejorar la asistencia. Métodos: estudio transversal y observacional a partir de un cuestionario remitido online a socios de la Sociedad Española de Nutrición Clínica y Metabolismo (SENPE) y al Área de Nutrición de la Sociedad Española de Endocrinología y Nutrición (SEEN). Los datos se analizaron según las camas de los hospitales encuestados (< 500/≥ 500). Resultados: 23 respuestas de 8 comunidades autónomas. En el 87 % de las UNCyD se prestaba atención a los TCA; el 65,2 % contaban con un proceso específico; el 91,3 % colaboraban con Psiquiatría; el 34,8 % tenían área propia de hospitalización; el 56,5 % disponían de hospital de día pero participaban en él el 21,7 %; el 39,1 % tenían consulta monográfica; se realizaba educación nutricional en el 87 %, sobre todo por enfermería; se prescribían frecuentemente dietas individualizadas y suplementos orales en el 39,1 y el 56,5 %, respectivamente; solo los hospitales más grandes participaban en investigación sobre TCA (62,5 %); y el 21,7 % colaboraban con asociaciones de pacientes. Los hospitales con ≥ 500 camas disponían de más recursos y estaban más satisfechos. Los profesionales demandaban recursos y procesos consensuados con psiquiatría. Conclusiones: los recursos y las prácticas asistenciales son dispares en las UNCyD encuestadas, así como la colaboración multidisciplinar. La evidencia recogida permite diseñar estrategias de mejora en este ámbito. (AU)

Introduction: eating disorders (EDs) entail a therapeutic challenge. Objective: to describe ED care from the perspective of Nutrition Units (NU) in relation to human and care resources, the activities carried out, and satisfaction with care in Spain; to collect demands from professionals to improve assistance. Methods: a cross-sectional, observational study based on a questionnaire sent online to members of the Spanish Society of Clinical Nutrition and Metabolism (SENPE) and to the Nutrition Area of the Spanish Society of Endocrinology and Nutrition (SEEN). The data were analyzed according to number of beds of the hospitals surveyed (< 500/≥ 500). Results: 23 responses from 8 autonomous communities. In 87 % of NUs care was given to eating disorders; 65.2 % had a specific process; 91.3 % collaborated with Psychiatry; 34.8 % had their own hospitalization area; 56.5 % had a day hospital, but 21.7 % participated in it; 39.1 % had a monographic consultation office; nutritional education was carried out in 87 %, especially by nursing; individualized diets and oral supplements were frequently prescribed in 39.1 % and 56.5 %, respectively; only the largest hospitals participated in research on EDs (62.5 %), and 21.7 % collaborated with patient associations. Hospitals with ≥ 500 beds had more resources and were more satisfied. Professionals demanded resources and processes agreed with Psychiatry. Conclusions: resources and care practices are uneven in the NUs surveyed, as well as multidisciplinary collaboration. The collected evidence allows us to design improvement strategies in this area. (AU)

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Excess weight (EW) in children has become a severe public health problem. The present study aimed to describe the main lifestyle characteristics and their possible association with nutritional status in a group of schoolchildren enrolled in the GENYAL study, where 221 children in the first or second grade of primary education (6-9 years old) were included. Anthropometric (BMI and bioimpedance), dietary intake (twice-repeated 24 h food record), and physical activity (twice-repeated 24 h physical activity questionnaire) data were collected. Logistic and linear regressions, with p-values adjusted for multiple tests by Bonferroni's method and with sex and age as covariates, were applied. The prevalence of EW was 19%, 25.4%, and 32.2%, according to Orbegozo Foundation, IOFT, and WHO criteria, respectively. The results showed a significant association between schoolchildren's nutritional status and energy balance, defined as the ratio of estimated energy intake to estimated energy expenditure (%), (ß = -1.49 (-1.9-1.07), p < 0.01) and KIDMED Mediterranean Diet Quality Index score (ß = -0.19 (95% IC -0.38-0), p = 0.04), and between the availability of TV or other technological devices in their room and the child's BMI (ß = 1.15 (95% IC 0.20-2.10), p = 0.017) and their fat mass (ß = 3.28 (95% IC 0.69-5.87), p = 0.013). The number of dairy servings/day had a protective effect against EW (OR = 0.48 (0.29-0.75), p adjusted = 0.05)). Studying lifestyle factors associated with obesity is essential for developing tools and strategies for obesity prevention in children.

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Background: Breakfast has traditionally been considered one of the most important meals of the day; however, there is little evidence for the influence of breakfast quality and insulin resistance (IR). This study aimed to assess the quality of breakfast in a group of schoolchildren, and its association with IR. Methods: A cross-sectional study with 852 children (8−13 years) was carried out. Fasting plasma glucose, insulin and anthropometric parameters were measured. A three-day dietary record was used to assess their diet and to calculate the Breakfast Quality Index (BQI). The sample was divided into tertiles according to the BQI (tertile 3: better breakfast quality). The homeostatic model was used to assess insulin resistance (HOMA-IR), and IR was defined as HOMA-IR > 3.16. Results: The prevalence of IR was 5.2%. The mean BQI score was 4.50 ± 1.25, and boys had lower scores than girls. Children in the BQI tertile 3 had a better global diet quality. In boys, being in the BQI tertile 3 was associated with a lower risk of IR (OR [95% CI]: 0.10 [0.01−0.77], p < 0.05). Conclusions: A higher-quality breakfast was associated with better overall diet quality and a lower risk of IR, especially in boys.

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Introduction: Introduction: eating disorders (EDs) entail a therapeutic challenge. Objective: to describe ED care from the perspective of Nutrition Units (NU) in relation to human and care resources, the activities carried out, and satisfaction with care in Spain; to collect demands from professionals to improve assistance. Methods: a cross-sectional, observational study based on a questionnaire sent online to members of the Spanish Society of Clinical Nutrition and Metabolism (SENPE) and to the Nutrition Area of the Spanish Society of Endocrinology and Nutrition (SEEN). The data were analyzed according to number of beds of the hospitals surveyed (< 500/≥ 500). Results: 23 responses from 8 autonomous communities. In 87 % of NUs care was given to eating disorders; 65.2 % had a specific process; 91.3 % collaborated with Psychiatry; 34.8 % had their own hospitalization area; 56.5 % had a day hospital, but 21.7 % participated in it; 39.1 % had a monographic consultation office; nutritional education was carried out in 87 %, especially by nursing; individualized diets and oral supplements were frequently prescribed in 39.1 % and 56.5 %, respectively; only the largest hospitals participated in research on EDs (62.5 %), and 21.7 % collaborated with patient associations. Hospitals with ≥ 500 beds had more resources and were more satisfied. Professionals demanded resources and processes agreed with Psychiatry. Conclusions: resources and care practices are uneven in the NUs surveyed, as well as multidisciplinary collaboration. The collected evidence allows us to design improvement strategies in this area.

Introducción: Introducción: los trastornos de la conducta alimentaria (TCA) suponen un reto terapéutico. Objetivo: describir la asistencia a los TCA desde la perspectiva de las unidades de nutrición clínica y dietética (UNCyD) en relación con los recursos humanos y asistenciales, las actividades realizadas y la satisfacción con la atención en España; recoger demandas de los profesionales para mejorar la asistencia. Métodos: estudio transversal y observacional a partir de un cuestionario remitido online a socios de la Sociedad Española de Nutrición Clínica y Metabolismo (SENPE) y al Área de Nutrición de la Sociedad Española de Endocrinología y Nutrición (SEEN). Los datos se analizaron según las camas de los hospitales encuestados (< 500/≥ 500). Resultados: 23 respuestas de 8 comunidades autónomas. En el 87 % de las UNCyD se prestaba atención a los TCA; el 65,2 % contaban con un proceso específico; el 91,3 % colaboraban con Psiquiatría; el 34,8 % tenían área propia de hospitalización; el 56,5 % disponían de hospital de día pero participaban en él el 21,7 %; el 39,1 % tenían consulta monográfica; se realizaba educación nutricional en el 87 %, sobre todo por enfermería; se prescribían frecuentemente dietas individualizadas y suplementos orales en el 39,1 y el 56,5 %, respectivamente; solo los hospitales más grandes participaban en investigación sobre TCA (62,5 %); y el 21,7 % colaboraban con asociaciones de pacientes. Los hospitales con ≥ 500 camas disponían de más recursos y estaban más satisfechos. Los profesionales demandaban recursos y procesos consensuados con psiquiatría. Conclusiones: los recursos y las prácticas asistenciales son dispares en las UNCyD encuestadas, así como la colaboración multidisciplinar. La evidencia recogida permite diseñar estrategias de mejora en este ámbito.

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El ayuno intermitente es un patrón dietético caracterizado por la alternancia de periodos de ayuno, totales o parciales, y de consumo de alimentosad libitum. Durante el ayuno prolongado, el organismo utiliza los cuerpos cetónicos que se forman a partir de la lipolisis de la grasa del organismo, lo que también da lugar a algunas modificaciones metabólicas con efectos positivos para la salud. En este sentido, el ayuno intermitentenocturno podría contribuir a sincronizar adecuadamente el sistema circadiano, haciendo que los procesos fisiológicos, hormonales, energéticosy metabólicos funcionen correctamente y mantengan al individuo en homeostasis. Así, de acuerdo con los resultados de diferentes estudios, elayuno intermitente, a corto-medio plazo, parece mejorar la composición corporal, así como los valores de diversos parámetros cardiometabólicoscomo la insulina y el índice HOMA-IR, entre otros. Estos efectos se han observado tanto en mujeres premenopáusicas como postmenopáusicas,sin hallar diferencias entre ambos estados y son similares a los encontrados con intervenciones con dietas con restricción calórica. (AU)

Intermittent fasting is a dietary pattern characterized by alternating periods of total or partial fasting and ad libitum food consumption. Duringprolonged fasting, the body uses the ketone bodies formed from lipolysis of body fat, which also leads to some metabolic modifications withpositive effects on health. In this sense, nocturnal intermittent fasting could contribute to properly synchronize the circadian system making the physiological, hormonal, energetic and metabolic processes work correctly and keeping to the individual in homeostasis. Thus, according to the results of different studies, intermittent fasting, in the short-medium term, seems to improve body composition, as well as the values of several cardiometabolic parameters such as insulin and HOMA-IR index, among others. These effects have been observed in both pre- and postmenopausal women (no differences have been found between both states) and are similar to those found in interventions with caloric restriction diets. (AU)

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El cáncer de mama es el tumor más prevalente en las mujeres y ocupa el primer lugar en incidencia y en mortalidad en muchos países. Si bien las causas del cáncer de mama son complejas y multifactoriales, los factores nutricionales y aquellos relacionados con el estado nutricional juegan un papel importante en el desarrollo de la enfermedad. De esta forma, se han identificado algunos factores que aumentan su riesgo, como el aumento de peso, la cantidad de tejido adiposo, la circunferencia de cintura, el consumo de alcohol, etc., o bien, que lo reducen, como el consumo de frutas y verduras. Los factores nutricionales o que dependen del estado de nutrición son modificables y prevenibles, por lo que deben tenerse en cuenta al diseñar programas de prevención eficaces. (AU)

Breast cancer is the most prevalent tumor in women, ranking first in incidence and mortality in many countries. Although the causes of breast cancer are complex and multifactorial, nutritional factors and those related to nutritional status play an important role in the development of the disease. In this way, factors that increase breast cancer risk have been identified, such as weight gain, the amount of adipose tissue, waist circumference, alcohol consumption or the consumption of red meat and processed meat, while other factors have been identified that reduce the risk, such as eating fruits and vegetables. Nutritional factors or factors that depend on the state of nutrition are modifiable and preventable, so they must be considered when designing effective prevention programs. (AU)

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La anorexia nerviosa (AN) es una enfermedad psiquiátrica, con elevada prevalencia y comorbilidades, caracterizada por una baja tasa de respuestaal tratamiento. Se considera una enfermedad multifactorial. En los últimos años se ha puesto el foco en la presencia de disbiosis intestinal ysu posible implicación como factor causal, así como alternativa de tratamiento. El objetivo de este trabajo ha sido revisar el estado actual delconocimiento de las alteraciones en la microbiota intestinal identificadas en pacientes con AN y la posibilidad del uso de probióticos como alternativa terapéutica. Se han descrito importantes cambios en la diversidad de las especies asociadas a la pérdida de peso que podrían contribuira perpetuar el trastorno y que explicarían muchas de las alteraciones nutricionales, gastrointestinales, psicológicas y cognitivas presentes enestos pacientes. El uso de probióticos, poco estudiado aún en pacientes con AN, abre una nueva ventana para mejorar la respuesta, siempre dela mano de los tratamientos convencionales. (AU)

Anorexia nervosa (AN) is a psychiatric disease with a high prevalence and comorbidities, characterized by a low response rate to treatment.It is considered as a multifactorial disease. In recent years, the focus has been placed on the presence of intestinal dysbiosis and its possibleinvolvement as a causal factor as well as an alternative treatment. The objective of this work has been to review the current state of knowledge ofalterations in the intestinal microbiota identified in patients with AN and the possibility of using probiotics as a therapeutic alternative. Significantchanges in the diversity of species associated with weight loss have been described that could favor the perpetuation of the disorder, and that wouldexplain many of the nutritional, gastrointestinal, psychological, and cognitive alterations present in these patients. The use of probiotics, still littlestudied in patients with AN, sheds some light on this matter to improve the treatment response, always hand in hand with conventional treatments. (AU)

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