Popular Diets and Skin Effects: A Narrative Review. / Dietas populares y su impacto en la piel. Una revisión narrativa.

Numerous diets for losing weight, building strength, and managing a range of cardiovascular, neurologic, and skin diseases have become popular in recent years. The ketogenic diet and intermittent fasting in particular have shown promising results in clinical and sports medicine. The Mediterranean diet, in turn, is widely recognized for its numerous health benefits. Also popular are the paleo diet and vegan and gluten-free diets. Positive effects on inflammatory conditions, such as psoriasis, atopic dermatitis, hidradenitis suppurativa, and acne, have been observed in patients who practice intermittent fasting or follow ketogenic or Mediterranean diets. This last choice may also protect against certain skin cancers. We review the role of several popular diets in the management of skin disorders.

[Fourteenth Jesús Culebras Lecture. Ketogenic diet, a half-discovered treatment]. / Decimocuarta Lección Jesús Culebras. Dieta cetogénica, un tratamiento a medio descubrir.

Introduction: The ketogenic diet was an amazing approach to treating epilepsy from its beginning. The body undergoes a change in obtaining energy, going from depending on carbohydrates to depending on fats, and then a whole series of biochemical routes are launched that, independently but also complementary, give rise to a set of effects that benefit the patient. This search for its mechanism of action, of devising how to improve compliance and take advantage of it for other diseases has marked its trajectory. This article briefly reviews these aspects, emphasizing the importance of continuing to carry out basic and clinical research so that this treatment can be applied with solid scientific bases.

Introducción: La dieta cetogénica constituyó desde su inicio un planteamiento sorprendente para el tratamiento de la epilepsia. Someter al organismo a un cambio en la obtención de energía, pasando de depender de los carbohidratos a hacerlo de las grasas, pone en marcha toda una serie de rutas bioquímicas que, de forma independiente pero también complementaria, dan lugar a un conjunto de efectos que benefician al paciente. Esta búsqueda de su mecanismo de acción, de idear cómo mejorar el cumplimiento y de aprovecharla para otras enfermedades ha marcado su trayectoria. En este artículo se revisan someramente estos aspectos, haciendo hincapié en la importancia de seguir realizando investigación básica y clínica para que este tratamiento pueda aplicarse con bases científicas sólidas.

[Controlling carbohydrate content in antiepileptic medications for children on a ketogenic diet]. / Control de carbohidratos en los medicamentos antiepilépticos para niños con dieta cetogénica.

Introduction: Introduction: patients who follow a ketogenic diet for the control of epileptic seizures must carry out a strict control of carbohydrates from the foods they eat and the medicines they are prescribed. In the initiation of a ketogenic diet and when a doctor prescribes a new medication, it is necessary to select the most appropriate pharmaceutical form so that the supply of excipients in the form of carbohydrates from the drugs is minimized. Objectives: the goal of the present paper was to compile a list of carbohydrate and caloric contents in antiepileptic drugs commonly used in pediatric neurology. Methods: in each medication included in the list, the content of excipients considered carbohydrates and derivatives that could influence the patient's ketosis was reviewed. The caloric content from carbohydrates and polyols in each medication was calculated. Results: the table provides the total carbohydrate and caloric content for antiepileptic medications in pediatric patients consuming the ketogenic diet. Conclusions: this table is intended to be a useful tool to help clinicians select a pharmaceutical form that is less likely to affect the ketogenic diet. Additionally, knowing the carbohydrate content of a new medication will allow adjustment of the diet to maintain ketosis.

Introducción: Introducción: los pacientes que siguen una dieta cetogénica para el control de las crisis epilépticas deben llevar a cabo un estricto control de los hidratos de carbono procedentes tanto de los alimentos que consumen como de los medicamentos que tienen pautados. Tanto en la instauración de la dieta cetogénica como cuando el médico prescribe un medicamento nuevo es necesario el ajuste de la medicación a las formas farmacéuticas más adecuadas, de forma que se minimice el aporte de excipientes en forma de hidratos de carbono de los medicamentos. Objetivos: el objetivo que planteamos en el presente trabajo fue elaborar un listado de medicamentos antiepilépticos de utilización habitual en neurología pediátrica que incluyera información sobre su contenido calórico en forma de hidratos de carbono para la administración a pacientes con dieta cetogénica. Métodos: en cada medicamento incluido en el listado se revisó el contenido en excipientes considerados hidratos de carbono y derivados que pudieran influir en la cetosis del paciente. Se calculó el contenido calórico procedente de los hidratos de carbono y polioles de cada medicamento. Resultados: elaboración de una tabla para consulta del contenido calórico de distintos medicamentos antiepilépticos utilizados en neurología pediátrica para pacientes con dieta cetogénica. Conclusiones: la tabla publicada pretende ser una herramienta útil que permita la consulta del contenido calórico de distintos medicamentos antiepilépticos y la selección del medicamento idóneo que menos afecte a la dieta cetogénica. Con el contenido calórico en carbohidratos de las medicaciones pautadas se podrán realizar los ajustes necesarios en la dieta para mantener la cetosis necesaria.

Effects of very low-carbohydrate ketogenic diet on lipid metabolism in patients with type II diabetes mellitus: a meta-analysis.

Introduction: Objective: to evaluate the lipid metabolism of patients with type 2 diabetes mellitus (T2DM) after very low-carbohydrate ketogenic (VLCK) diet treatment, so as to provide an evidence-based basis for better dietary management and comprehensive treatment of diabetic patients. Methods: PubMed, Cochrane Library, Embase, and Web of Science databases were searched for randomized controlled trial about VLCK diet on lipid metabolism of T2DM up to September 2021. The data were analyzed using the Stata 15.0; standardized mean difference (SMD) was used as effect size. Results: ten articles were included in this meta-analysis. There were no significant differences between the two groups in total cholesterol (SMD = -0.07, 95 % CI: -0.06-0.20, p > 0.05), HDL (SMD = 0.13, 95 % CI: -0.05-0.31, p > 0.05) and LDL (SMD = 0.07, 95 % CI: -0.06-0.20, p > 0.05) levels after treatment. No difference was found in total cholesterol, HDL, and LDL levels between the two groups after 3, 6, and 12 months of treatment (p > 0.05). Triglyceride levels decreased after VLCK diet compared with control (SMD = -0.49, 95 % CI: -0.82 to -0.17, p = 0.003). A marked reduction of triglyceride levels was identified after 3 months of VLCK diet treatment (SMD = -0.69, 95 % CI: -1.00 to -0.38), without significant difference after 6 and 12 months. Conclusion: T2DM patients who receive a VLCK diet to lower blood glucose are not associated with increased levels of total cholesterol and LDL, and decreased levels of HDL. Additionally, this diet can achieve a short-term reduction of triglyceride levels.

Introducción: Objetivo: evaluar el metabolismo lipídico de los pacientes con diabetes mellitus de tipo 2 (DMT2) tras el tratamiento con una dieta cetogénica muy baja en carbohidratos (VLCK), con el fin de proporcionar una base basada en la evidencia para un mejor manejo dietético y un tratamiento integral de los pacientes diabéticos. Métodos: se buscaron en las bases de datos PubMed, Cochrane Library, Embase y Web of Science ensayos controlados aleatorios sobre los efectos de la dieta VLCK en el metabolismo de los lípidos de la DMT2 hasta septiembre de 2021. Los datos se analizaron con el Stata 15.0. Se utilizó la diferencia de medias estandarizada (DME) como tamaño del efecto. Resultados: se incluyeron diez artículos en este metaanálisis. No hubo diferencias significativas entre los dos grupos en los niveles de colesterol total. No se encontraron diferencias en los niveles de colesterol total, HDL y LDL entre los dos grupos después de 3, 6 y 12 meses de tratamiento (p > 0,05). Los niveles de triglicéridos disminuyeron después de la dieta VLCK en comparación con el control. Se identificó una marcada reducción de los niveles de triglicéridos después de 3 meses de tratamiento con la dieta VLCK, sin diferencias significativas después de 6 y 12 meses. Conclusión: los pacientes con DMT2 que reciben una dieta VLCK para reducir la glucemia no se asocian a un aumento de los niveles de colesterol total y LDL, y a una disminución de los niveles de HDL.

[Oral desensitization with Ketocal® in an infant with ketogenic diet and cow's milk protein allergy]. / Desensibilización con Ketocal® en lactante con dieta cetogénica y alergia a proteínas de leche de vaca.

Introduction: Introduction: ketogenic diet is a treatment with proven efficacy in drug-refractory childhood epilepsy. Cow's milk protein allergy may be a limitation for treating infants with ketogenic diet, as they need a product that contains cow's milk protein (Ketocal®). Case report: we report the case of an infant with a drug-refractory epileptic encephalopathy and IgE-mediated cow's milk protein allergy, who started a classic ketogenic diet. Oral desensitization was achieved with Ketocal 3:1®, allowing its use in the diet and achieving a clinical improvement with seizure control. Discussion: a patient with epilepsy and cow's milk protein allergy can benefit from the ketogenic diet, since it is possible to perform an oral immunotherapy with Ketocal®, also achieving a probable resolution of his/her allergy.

Introducción: Introducción: la dieta cetogénica es un tratamiento con eficacia demostrada en la epilepsia infantil refractaria a fármacos. La alergia a la proteína de leche de vaca puede ser una limitación para tratar a lactantes con dieta cetogénica, ya que necesitan un producto que contiene proteínas de leche de vaca (Ketocal®). Caso clínico: presentamos el caso de un lactante con una encefalopatía epiléptica refractaria a fármacos y alergia a las proteínas de leche de vaca IgE mediada al que se quiere instaurar una dieta cetogénica clásica. Se consigue la desensibilización con Ketocal 3:1®, pudiendo utilizarlo en la dieta y logrando una mejoría clínica con el control de las crisis. Discusión: un paciente con epilepsia y alergia a las proteínas de leche de vaca puede beneficiarse de la dieta cetogénica, ya que es posible realizar una inmunoterapia oral con Ketocal® y conseguir, además, una probable resolución de su alergia.

Effectiveness of nutritional interventions on behavioral symptomatology of autism spectrum disorder: a systematic review.

Introduction: Introduction: the main treatment for people with autism spectrum disorder (ASD) corresponds to cognitive behavioral therapy in conjunction with pharmacotherapy. Together they seek to attenuate the behavioral symptoms of these patients, as well as to increase their social functionality. However, other strategies have become popular to achieve the same goal of classical treatment. Particularly, nutritional interventions are positioned above others, and it is necessary to investigate their effectiveness, considering that children with ASD present a marked food selectivity, as well as gastrointestinal alterations. Objective: to evaluate the effectiveness of nutritional interventions in the behavioral symptomatology of infants with ASD. Methods: a systematic search was carried out in the Scopus and PubMed databases, in Spanish and English. The filters of clinical studies and original articles were used, choosing only nutritional interventions in children under 19 years of age and who had had at least 4 weeks of intervention. Results: evidence was found on gluten- and casein-free diets, ketogenic diet, omega-3 supplementation, prebiotics/probiotics, and vitamins/minerals presenting positive results in most of the articles analyzed; however, the heterogeneity presented requires a greater body of evidence to promote its use. Conclusion: the five types of nutritional interventions evaluated show varied evidence that does not allow defining the degree of effectiveness between one or the other in terms of behavioral improvements in the population with ASD.

Introducción: Introducción: el principal tratamiento para las personas con trastorno del espectro autista (TEA) corresponde a la terapia cognitivo conductual en conjunto con farmacoterapia. En conjunto buscan atenuar la sintomatología conductual de estos pacientes, así como aumentar su funcionalidad social. Sin embargo, otras estrategias se han tornado populares para conseguir el mismo objetivo del tratamiento clásico. Particularmente, las intervenciones nutricionales se posicionan por sobre otras y es necesario investigar su efectividad, considerando que los infantes con TEA presentan una marcada selectividad alimentaria, así como alteraciones gastrointestinales. Objetivo: evaluar la efectividad de las intervenciones nutricionales en la sintomatología conductual de infantes con TEA. Método: se realizó una búsqueda sistemática en las bases de datos de Scopus y PubMed, en español e inglés. Se utilizaron los filtros de estudios clínicos y artículos originales, eligiendo solo intervenciones nutricionales en menores de 19 años y que tuvieran al menos 4 semanas de intervención. Resultados: se encontró evidencia sobre las dietas libres de gluten y caseína, la dieta cetogénica, la suplementación de omega-3, los prebióticos/probióticos y las vitaminas/minerales, presentando resultados positivos en la mayoría de los artículos analizados; sin embargo, la heterogeneidad presentada exige un mayor cuerpo de evidencia para promover su utilización. Conclusión: los cinco tipos de intervenciones nutricionales evaluadas muestran evidencia variada que no permite definir el grado de efectividad entre una u otra en términos de mejoras conductuales en la población con TEA.

Ketogenic dietary therapies for epilepsy: Experience in 160 patients over 18 years.

AIM: Ketogenic dietary therapies (KDT) produce anticonvulsant and neuroprotective effects, reduce seizures and improve the cognitive state in patients with epilepsy. Our purpose was to evaluate the effects of KDT in children with refractory epilepsy (effectiveness, side effects, impact on nutritional status and growth). METHODS: A retrospective and prospective observational descriptive study was conducted in a Spanish tertiary hospital (January 2000 to December 2018). One hundred sixty pediatric patients with epilepsy were treated with KDT (82 males; mean age 5 years 9 months). Seizures, anti-epileptic drugs, anthropometric measures, side effects, and laboratory assessment were monitored baseline and at 3, 6, 12 and 24 months after the onset of KDT. RESULTS: In these time intervals, the seizure-free patients were: 13.7, 12.5, 14.4 and 10.6%, respectively, and a reduction of seizures ≥ 50% was achieved in 41.9, 37.5, 28.7 and 16.2%. Side effects were frequent, especially digestive disorders, hypercalciuria, hypoglycemia, hepatic dysfunction and dyslipidemia. Prealbumin, retinol binding protein, vitamin A and magnesium decreased significantly. Height was affected, especially in children below 2 years. CONCLUSIONS: KDT are effective for refractory epilepsy in children. However, adverse effects are frequent, and it may affect nutritional status and growth.

Dietary patterns in non-alcoholic fatty liver disease (NAFLD): Stay on the straight and narrow path!

Non-alcoholic fatty liver disease (NAFLD) is the most frequent hepatic disease globally. NAFLD patients are at an increased risk of both liver and cardiovascular morbidity and mortality, as well as all-cause death. NAFLD prevalence is rapidly increasing worldwide and, thus, there is an urgent need for health policies to tackle its development and complications. Currently, since there is no drug therapy officially indicated for this disease, lifestyle interventions remain the first-line therapeutic option. In the present narrative review, we discuss the effects of certain dietary patterns on NAFLD incidence and progression. The Mediterranean diet is regarded as the diet of choice for the prevention/treatment of NAFLD and its complications, based on the available evidence. Other plant-based dietary patterns (poor in saturated fat, refined carbohydrates, red and processed meats) are also beneficial [i.e., Dietary Approaches to Stop Hypertension (DASH) and vegetarian/vegan diets], whereas more data are needed to establish the role of ketogenic, intermittent fasting and paleo diets in NAFLD. Nevertheless, there is no "one-size-fits-all" dietary intervention for NAFLD management. Clinicians should discuss with their patients and define the diet that each individual prefers and is able to implement in his/her daily life.

[Treatment of refractory epilepsy. A comparison between classic ketogenic diet and modified Atkins diet in terms of efficacy, adherence, and undesirable effects]. / Tratamiento de la epilepsia refractaria. Comparación entre la dieta cetogénica clásica y la de Atkins modificada en cuanto a eficacia, adherencia y efectos indeseables.

INTRODUCTION: Background: the ketogenic diet (CD) is an established, effective non-pharmacological treatment for refractory epilepsy in childhood. Aim: the objective of this study was to compare the efficacy, the presence of undesirable effects, and adherence between the classic ketogenic diet (DCC) and the modified Atkins diet (DAM). Materials and methods: a retrospective and comparative investigation was carried out to evaluate the medical records of all the patients who started treatment with a ketogenic diet by the same team between 2008 and 2018. In all, 57 patients were started on a DAM diet and 19 patients were given a DCC diet. Results: it was observed that both the Atkins and the classic diets were equally effective (approximately, 80 %; p = 0.252). Regarding adherence, there was a significantly higher percentage of adherence to the Atkins diet than to the classic diet (p = 0.018). Fewer adverse effects were observed with DAM than with DCC (p = 0.012). In all, 21 % of patients under DAM had unfavorable effects (12/57), while 52.63 % of patients on DCC had complications (10/19). Conclusion: a comparable effectiveness in terms of crisis control was found between DAM and DCC. However, DAM exhibits a much better adherence than DCC, and its undesirable effects are milder, less common. That is why, according to other works, it is likely that DAM should be first-choice for patients with refractory epilepsy in a large percentage of cases.

INTRODUCCIÓN: Introducción: la dieta cetogénica (CD) es un tratamiento no farmacológico efectivo, ya establecido para la epilepsia refractaria en la infancia. Objetivo: el objetivo de este estudio fue comparar la eficacia, la presencia de efectos indeseables y la adherencia entre la dieta cetogénica clásica (DCC) y la dieta de Atkins modificada (DAM). Materiales y métodos: se realizó una investigación retrospectiva y comparativa, evaluando las historias clínicas de todos los pacientes que iniciaron tratamiento con dieta cetogénica a cargo de un mismo equipo de trabajo entre 2008 y 2018. Se incluyeron 57 pacientes que iniciaron una dieta DAM y 19 pacientes con dieta DCC. Resultados: se observó que tanto la dieta Atkins como la clásica fueron igualmente eficaces (80 %, aproximadamente; p = 0,252). En relación a la adherencia, se registró un porcentaje significativamente mayor de adherencia a la dieta Atkins que a la clásica (p = 0,018). Se observaron menos efectos adversos con la DAM que con la dieta CC (p = 0,012). El 21 % de los pacientes con DAM presentaron efectos desfavorables (12/57), mientras que el 52.63 % de los pacientes en DCC tuvieron complicaciones (10/19). Conclusión: se describe una efectividad equiparable en cuanto al control de crisis entre la DAM y la DCC. Sin embargo, la DAM presenta una adherencia mucho mejor que la observada con la DCC y sus efectos indeseables son más leves y más infrecuentes. Es por eso que, de acuerdo con otros trabajos, la DAM probablemente sea la primera elección para los pacientes con epilepsia refractaria en un gran porcentaje de los casos.

[Ketogenic dietary therapies for epilepsy: Experience in 160 patients over 18 years]. / Terapias dietéticas cetogénicas en epilepsia: experiencia en 160 pacientes durante 18 años.

AIM: Ketogenic dietary therapies (KDT) produce anticonvulsant and neuroprotective effects, reduce seizures and improve the cognitive state in patients with epilepsy. Our purpose was to evaluate the effects of KDT in children with refractory epilepsy (effectiveness, side effects, impact on nutritional status and growth). METHODS: A retrospective and prospective observational descriptive study was conducted in a Spanish tertiary hospital (January 2000 to December 2018). One hundred sixty pediatric patients with epilepsy were treated with KDT (82 males; mean age 5 years 9 months). Seizures, anti-epileptic drugs, anthropometric measures, side effects, and laboratory assessment were monitored baseline and at 3, 6, 12 and 24 months after the onset of KDT. RESULTS: In these time intervals, the seizure-free patients were: 13.7, 12.5, 14.4 and 10.6%, respectively, and a reduction of seizures≥50% was achieved in 41.9, 37.5, 28.7 and 16.2%. Side effects were frequent, especially digestive disorders, hypercalciuria, hypoglycemia, hepatic dysfunction and dyslipidemia. Prealbumin, retinol binding protein, vitamin A and magnesium decreased significantly. Height was affected, especially in children below 2 years. CONCLUSIONS: KDT are effective for refractory epilepsy in children. However, adverse effects are frequent, and it may affect nutritional status and growth.

[Multidisciplinary methodology and ketogenic diet in real clinical practice: efficacy and rapidity in weight loss. Survival Analysis PROMET Lipoinflammation study]. / Metodología multidisciplinar y dieta cetogénica en la práctica clínica real: eficacia y rapidez en la pérdida de peso. Análisis de supervivencia. Estudio PROMET Lipoinflamación.

INTRODUCTION: Objective: the aim of the current work was to evaluate the response time to a method of weight loss that includes dietary guidelines, physical exercise and emotional support. The response was defined as a loss of 10% of the baseline weight. Methods: data was obtained from the patients' record recruited in Promet Lipoinflamación, an observational study of real world data in obese or overweight patients treated with a multidisciplinary method and based initially on a very-low-calorie ketogenic (VLCK) diet. Weight loss rate was evaluated through a survival analysis Kaplan-Meier and related factors through Cox regression). Results: 6,369 subjects were included and 74.4% managed to reach a weight loss of 10% in a mean time of 57.64 days (IC 95%: 56.95-58.33). The factors associated with a greater probability of reaching a loss of 10% or more were male gender (RR: 1.37, p < 0.001), obesity types I, II and III vs. overweight (RR: 1.24, p < 0.001, 1.26, p < 0.001 and 1.22, p < 0.001, respectively) and young age vs. more than 55 years old (RR: 2.17, p < 0.001). Conclusion: Results obtained through real clinical practice show that the method produces fast and intense weight loss. Three out of four patients lost at least 10% of body weight in an average of 58 days.

INTRODUCCIÓN: Objetivo: el objetivo del estudio fue evaluar el tiempo de respuesta, definido como pérdida del 10% del peso, al tratamiento con un método multidisciplinar de pérdida de peso que incluye dieta (inicialmente cetogénica), ejercicio físico y soporte emocional. Métodos: los datos se obtuvieron a partir del registro de pacientes reclutados en el estudio Promet Lipoinflamación, un estudio observacional de práctica clínica real en pacientes obesos o con sobrepeso tratados con el método multidisciplinar, basado inicialmente en una dieta cetogénica de muy bajas calorías. La velocidad se valoró mediante un análisis de supervivencia Kaplan-Meier y los factores asociados mediante regresión de Cox. Resultados: la muestra estudiada fue de 6369 sujetos. El 74,4% consiguió alcanzar una pérdida de peso del 10% en una media de tiempo de 57,64 días (IC 95%: 56,95-58,33]. Los factores asociados a mayor probabilidad de alcanzar pérdida del 10% o más fueron género masculino (RR: 1,37; p < 0,001), obesidad de tipos I, II y III frente a sobrepeso (RR: 1,24; p < 0,001; 1,26; p < 0,001 y 1,22; p < 0,001, respectivamente) y edad joven frente a mayor de 55 años (RR: 2,17; p < 0,001). Conclusiones: los resultados obtenidos a través de la práctica clínica real muestran que el método produce una pérdida de peso rápida e intensa. Tres de cada cuatro pacientes perdieron, como mínimo, el 10% del peso corporal en una media de 58 días.

[Ketogenic diet as a trigger for diabetic euglycaemic ketoacidosis in a patient under treatment with iSGLT2]. / Dieta cetogénica como factor desencadenante de cetoacidosis diabética euglucémica en un paciente en tratamiento con iSGLT2.

Euglycaemic diabetic ketoacidosis is a possible adverse effect of selective sodium-glucose cotransporter inhibitors 2 (isGLT2) in patients with diabetes. However, the main scientific societies have recently recommended low or very low carbohydrate diets for the treatment of diabetes, relating the latter with the onset of ketosis. The combination of treatment with these drugs and following this type of diet can be dangerous. We present the case of a 64-year-old patient, suffering from LADA type diabetes, under usual treatment with intensive insulin therapy in 4 doses, who a few days after starting empagliflocin and a very low carbohydrate diet presented severe euglycaemic ketoacidotic decompensation.

Spanish population trends in Internet searches for information on different diets. / Tendencia de la población española de búsqueda en internet sobre información relacionada con diferentes dietas.

OBJECTIVE: To use Google Trends to explore the trends of interest of the Spanish population regarding information related to different types of diets, focused on those that are popular and with evidence-based studies, over the last 10years. MATERIAL AND METHODS: The search trends referred to the terms «Mediterranean diet¼, «ketogenic diet¼, «low fat diet¼, «intermittent fasting¼ and «vegan diet¼ were analyzed. The relative search volumes (RSV) of the terms were compared. The direction of the trend was studied using the Spearman's correlation coefficient (SC). RESULTS: «Mediterranean diet¼ was the most widely searched term, with a median RSV of 16 (interquartile range [IQR] 6; range 8-100), though it exhibited a decreasing chronological trend (SC=-0.216). It was followed by «ketogenic diet¼, with an RSV of 8 (IQR 9; range 1-57); «vegan diet¼, with an RSV of 4 (IQR 5; range 0-16); «intermittent fasting¼, with an RSV of 2 (IQR 5; range 0-27), and «low fat diet¼, with an RSV of 1.16 (IQR 0; range 0-2). The term with the best correlation over time was «intermittent fasting¼ (SC=0.96), followed by «ketogenic diet¼ (SC=0.91) and «vegan diet¼ (SC=0.85). CONCLUSIONS: In Spain, the interest of the population in information about the Mediterranean diet is greater than for other diets. However, in recent years there has been a progressive increase in interest (measured as RSV) in other diets such as the ketogenic diet, vegan diet or intermittent fasting, and there has been a decrease in interest in the Mediterranean diet. The low fat diet does not generate interest in the Spanish population.

[Weight loss and body composition changes through ketogenic diet and physical activity: a methodological and systematic review]. / Cambios en la pérdida de peso y la composición corporal con dieta cetogénica y práctica de actividad física: revisión narrativa, metodológica y sistemática.

INTRODUCTION: Introduction: practice of physical activity and the ketogenic diet monitoring can have a double effect in helping in processes of weight loss and improvement of body composition and lipid profile. Objective: the objective of this review was to investigate the work done with obese patients who undertook a ketogenic diet and a physical exercise program, as well as to calculate the overall effect size in terms of improvements in fat mass, through a meta-analysis. Methods: the selection of studies was based on the following criteria: experimental studies; a) experimental studies (randomized controlled designs) and quasi-experimental (e.g. pre-test/post-test); b) studies with low-carbohydrate diet (< 30%) or very low in carbohydrates (5-10%) (< 50 g Ch) and/or high in fats (> 35%); c) studies were admitted exclusively with subjects that facility overweight or obesity (BMI > 25; and d) with measurements of body composition and/or Lipid profile at the beginning and end of the intervention. Results: for the methodological review, 7 articles and 3 reviews were analyzed. All studies, whether by establishing aerobic or strength training and show significant weight loss in all outcomes. Conclusions: comparing different types of exercise, we could say that interventions based on endurance exercise reported a decrease in muscle mass, however there was a maintenance, and even an increase, in studies with resistance exercises. Meta-analysis showed significant results at the global level with a medium heterogeneity, therefore, there will be greater reduction of fat mass in groups that realize diets with low carbohydrates and exercise that in those who do not undertake this type of diet, and those only perform exercise.

INTRODUCCIÓN: Introducción: la práctica de actividad física y el seguimiento de una dieta cetogénica pueden suponer un doble efecto con mejores resultados en los procesos de pérdida de peso y mejora de la composición corporal y perfil lipídico. Objetivo: el objetivo de esta revisión fue investigar los trabajos realizados con pacientes obesos que siguen una dieta cetogénica y un programa de ejercicio físico, así como calcular el tamaño del efecto en cuanto a las mejoras en la masa grasa, a través de un metaaanálisis. Métodos: la selección de estudios se basó en los siguientes criterios: estudios experimentales; a) estudios experimentales (diseños controlados aleatorizados) y cuasi-experimentales (por ejemplo: pre-test/post-test); b) estudios con dieta baja en carbohidratos (< 30%) o muy baja en carbohidratos (5-10%) (< 50 g Ch) y/o alta en grasas (> 35%); c) se admitieron estudios exclusivamente con sujetos que padecieran sobrepeso u obesidad (IMC > 25 y/o enfermedad metabólica relacionada; y d) con mediciones de composición corporal y/o perfil lipídico al principio y al final de la intervención. Resultados: se analizaron 7 artículos y 3 revisiones. Comparando los diferentes tipos de ejercicio se podría afirmar que destaca la disminución de masa muscular en aquellos en los que las intervenciones son con ejercicio aeróbico, manteniéndose e incluso aumentando, en los estudios donde se realizó un ejercicio de fuerza. El metaanálisis nos muestra una reducción significativa de la masa grasa con una heterogeneidad media, por lo tanto, habrá mayor reducción de masa grasa en grupos que realizan dieta baja en carbohidratos y ejercicio que en los que no realizan dieta o tan solo realizan ejercicio. Conclusiones: la combinación de dieta cetogénica y ejercicio físico puede reducir la masa grasa en comparación con realizar solo dieta o solo ejercicio físico.

[Translated article] Popular Diets and Skin Effects: A Narrative Review / Dietas populares y su impacto en la piel. Una revisión narrativa

Numerous diets for losing weight, building strength, and managing a range of cardiovascular, neurologic, and skin diseases have become popular in recent years. The ketogenic diet and intermittent fasting in particular have shown promising results in clinical and sports medicine. The Mediterranean diet, in turn, is widely recognized for its numerous health benefits. Also popular are the paleo diet and vegan and gluten-free diets. Positive effects on inflammatory conditions, such as psoriasis, atopic dermatitis, hidradenitis suppurativa, and acne, have been observed in patients who practice intermittent fasting or follow ketogenic or Mediterranean diets. This last choice may also protect against certain skin cancers. We review the role of several popular diets in the management of skin disorders. (AU)

Se han popularizado diversas dietas para perder peso, incrementar la capacidad física y para el manejo de múltiples enfermedades crónicas: cardiovasculares, neurológicas o cutáneas. Destacan la dieta cetogénica y el ayuno intermitente, con resultados prometedores en la medicina tradicional y deportiva. Además, la dieta mediterránea se ha consolidado como una forma de alimentación de impacto positivo muy significativo en la salud. Otras dietas populares son la dieta «paleo», la dieta vegana y la libre de gluten. La dieta cetogénica, el ayuno intermitente y la dieta mediterránea aportan resultados favorables en dermatosis inflamatorias como la psoriasis, dermatitis atópica, hidradenitis supurativa o acné. La dieta mediterránea podría actuar también como factor protector para el desarrollo de algunas neoplasias cutáneas. En este artículo presentamos una revisión del papel de diversas dietas populares en el manejo de dermatosis. (AU)

Ketogenic diet in pharmacoresistant epilepsies: a clinical nutritional assessment / Dieta cetogênica na epilepsia fármaco-resistente: avaliação clínica-nutricional

Abstract Background Epilepsies are among the most prevalent chronic neurological diseases, usually beginning in childhood. About 30% of children with epilepsies develop seizures that are difficult to control with medication. Recurrent epileptic seizures hinder diet intake, impairing the nutritional status. Although non-pharmacological interventions (e.g., ketogenic diet therapy) can improve epileptic seizure frequency, few studies analyzed their impact on the nutritional status of children and adolescents with epilepsies. Objective The aim was to evaluate the effects of a ketogenic diet on the nutritional status and clinical course of patients with pharmacoresistant epilepsies. Methods This cross-sectional study included patients under 18 years of age followed up at the Ketogenic Diet Ambulatory Clinic of the Instituto de Medicina Integral Prof. Fernando Figueira between December 2015 and December 2021. Socioeconomic, clinical, nutritional, and laboratory data were collected from medical records at different time points during the ketogenic diet. Results The sample comprised 49 patients aged between 5 months and 17 years (median = 4.4 years), mostly male (62.1%), and from Recife and the metropolitan region (51%). Underweight patients (BMI-for-age) improved their nutritional status in six months. However, patients who were normal weight and overweight maintained their nutritional status. Dyslipidemia was a common and short-term adverse effect. Moreover, the treatment decreased epileptic seizure frequency and antiseizure medication intake. Conclusion The ketogenic diet prevented malnutrition from worsening and reduced epileptic seizures and antiseizure medication intake.

Resumo Antecedentes A epilepsia, uma das doenças neurológicas crônicas mais prevalentes, tem geralmente início na infância. Cerca de 30% das crianças com epilepsia desenvolvem crises de difícil controle medicamentoso. As crises epilépticas recorrentes dificultam a ingestão alimentar, prejudicando o estado nutricional. Intervenções não farmacológicas, como a terapia com dieta cetogênica, podem melhorar a frequência das crises epilépticas, mas existem poucos estudos sobre a repercussão no estado nutricional da criança/adolescente. Objetivo Avaliar o efeito da terapia cetogênica sobre o estado nutricional e a evolução clínica da epilepsia fármaco-resistente. Métodos Estudo tipo corte transversal envolvendo menores de 18 anos acompanhados no Ambulatório de Dieta Cetogênica do Instituto de Medicina Integral Prof. Fernando Figueira entre dezembro de 2015 e dezembro de 2021. Dados socioeconômicos, clínicos, nutricionais e laboratoriais foram coletados nos prontuários dos pacientes em vários momentos da terapia cetogênica. Resultados A amostra foi composta por 49 pacientes com idades entre cinco meses e 17 anos (mediana = 4,4 anos), a maioria do sexo masculino (62,1%) e procedentes de Recife e região metropolitana (51%). Pacientes com baixo peso (de acordo com o IMC para idade) melhoraram seu estado nutricional em seis meses. No entanto, os pacientes com peso adequado e com sobrepeso mantiveram seu estado nutricional. A dislipidemia foi um efeito adverso frequente e de curta duração. Além disso, o tratamento reduziu a frequência de crises epilépticas e a dose de fármacos anticrises. Conclusão A dieta cetogênica preveniu o agravamento da desnutrição e reduziu as crises epilépticas e a dosagem de fármacos anticrises.

Dietas populares y su impacto en la piel. Una revisión narrativa / Popular Diets and Skin Effects: A Narrative Review

Se han popularizado diversas dietas para perder peso, incrementar la capacidad física y para el manejo de múltiples enfermedades crónicas: cardiovasculares, neurológicas o cutáneas. Destacan la dieta cetogénica y el ayuno intermitente, con resultados prometedores en la medicina tradicional y deportiva. Además, la dieta mediterránea se ha consolidado como una forma de alimentación de impacto positivo muy significativo en la salud. Otras dietas populares son la dieta «paleo», la dieta vegana y la libre de gluten. La dieta cetogénica, el ayuno intermitente y la dieta mediterránea aportan resultados favorables en dermatosis inflamatorias como la psoriasis, dermatitis atópica, hidradenitis supurativa o acné. La dieta mediterránea podría actuar también como factor protector para el desarrollo de algunas neoplasias cutáneas. En este artículo presentamos una revisión del papel de diversas dietas populares en el manejo de dermatosis. (AU)

Numerous diets for losing weight, building strength, and managing a range of cardiovascular, neurologic, and skin diseases have become popular in recent years. The ketogenic diet and intermittent fasting in particular have shown promising results in clinical and sports medicine. The Mediterranean diet, in turn, is widely recognized for its numerous health benefits. Also popular are the paleo diet and vegan and gluten-free diets. Positive effects on inflammatory conditions, such as psoriasis, atopic dermatitis, hidradenitis suppurativa, and acne, have been observed in patients who practice intermittent fasting or follow ketogenic or Mediterranean diets. This last choice may also protect against certain skin cancers. We review the role of several popular diets in the management of skin disorders. (AU)

ESTUDIO DEL IMPACTO DE LA DIETA CETOGÉNICA EN LA CALIDAD DE VIDA DE PACIENTES PEDIÁTRICOS CON EPILEPSIA Y SUS FAMILIAS / STUDY OF THE IMPACT OF THE KETOGENIC DIET ON THE QUALITY OF LIFE OF PEDIATRIC PATIENTS WITH EPILEPSY AND THEIR FAMILIES

Introducción: El tratamiento mediante los distintos tipos de dietas cetogénicas ha demostrado en diversos trabajos efectividad en la reducción de las crisis convulsivas, de manera total o parcial. Sin embargo, se reportan tasas de deserción en la realización a largo plazo. Objetivo: Este trabajo tiene como objetivo identificar beneficios y dificultades que perciben las familias de niños en el tratamiento de Epilepsia resistente a fármacos que lleven a cabo la dieta cetogénica y que podrían influir en la adherencia o deserción. Materiales y métodos: Se realizó un estudio descriptivo transversal retrospectivo, en el Servicio de Neurología Infantil del HIBA, sección Dieta Cetogénica. Para el estudio, se realizó una encuesta para recabar características sociodemográficas de la población bajo estudio y también sobre dificultades y beneficios hallados en la terapia cetogénica. Se analizaron frecuencias, medias y chi cuadrado para establecer diferencias significativas con intervalo de confianza de 95%. Resultados: La muestra estuvo compuesta por 51 participantes, de 0 a 18 años. Al indagar sobre si percibían mejoras tras realizar terapia cetogénica, el 81% respondió que sí, el 11% no percibió mejoras y el 8% no sabía. Acerca de la presencia de dificultades para llevar a cabo el tratamiento, el 71% respondió que se encontraba con dificultades, el 23% no registró dificultades y el 6% manifestó que a veces. Al relacionar la presencia de dificultades con el nivel socioeconómico, se observaron diferencias significativas entre los grupos, siendo de mayor incidencia en familias de ingresos más bajos. Respecto de la variable edad, no se encontraron diferencias significativas en relación con las dificultades percibidas. Conclusiones: Es importante continuar trabajando con las familias en las dificultades que presentan para evitar deserción del tratamiento. Asimismo, resulta indispensable destacar el alto porcentaje de mejorías que perciben sus padres para lograr mayor adherencia

Introduction: Treatment using the different types of ketogenic diets has been shown in various studies to be effective in reducing seizures, which can be total or partial. However, dropout rates are reported in the long-term completion of it. Objetive: The objective of this work is to identify the benefits and difficulties perceived by the families of children undergoing treatment for drug-resistant epilepsy who follow the ketogenic diet and that could influence adherence or desertion. Materials and methods: A retrospective cross-sectional descriptive study was carried out at the HIBA Child Neurology Service, Ketogenic Diet section. For the study, a survey was carried out to collect sociodemographic characteristics of the population under study and also about difficulties and benefits found in ketogenic therapy. Frequencies, measures and chi square were analyzed to establish significant differences with a 95% confidence interval. Results: The sample consisted of 51 participants, from 0 to 18 years old. When asked if they perceived improvements after performing ketogenic therapy, 81% answered yes, 11% did not perceive improvements and 8% did not know. About the presence of difficulties to carry out the treatment, 71% answered that they had difficulties, 23% did not have them and 6% sometimes.When relating the presence of difficulties with the socioeconomic level, significant differences were observed between the groups, with a higher incidence in lower-income families. Regarding the age variable, no significant differences were found in relation to the perceived difficulties. Conclusion: It is important to continue working with families on the difficulties they present to avoid dropping out of treatment. Likewise, it is essential to highlight the high percentage of improvements that their parents perceive to achieve greater adherence

Dieta cetogénica y su influencia en el tratamiento de la epilepsia refractaria infantil / Ketogenic diet and its influence on the treatment of refractory epilepsy in children / Dieta cetogênica e sua influência no tratamento da epilepsia refratária em crianças

La dieta cetogénica durante muchos años utilizada como una alternativa en el tratamiento para la epilepsia refractaria infantil, que consiste en un alto consumo de grasas, reducidas cantidades de carbohidratos y las cantidades necesarias de proteína que permitan al paciente por medio de la producción de cetonas un correcto y adecuado aporte energético al cerebro y todo el SNC. Objetivo. Describir el uso de la dieta cetogénica en el tratamiento de la epilepsia refractaria infantil para determinar su efectividad en la reducción de convulsiones y mejora en la calidad de vida de los pacientes. Metodología. Se ha realizado una revisión sistemática de la literatura científica para examinar la relación entre la dieta cetogénica y su efecto en el tratamiento de la epilepsia refractaria infantil. Para identificar y seleccionar las fuentes de información, se aplicó la declaración PRISMA y se llevó a cabo una búsqueda bibliográfica exhaustiva en diversas bases de datos electrónicas, incluyendo PubMed, SCOPUS y SCIELO. Se utilizaron términos descriptores específicos como "dieta cetogénica", "influencia", "tratamiento", "epilepsia refractaria" y "niños", así como conectores como AND, OR o NOT para mejorar la precisión de la búsqueda. Conclusión. La dieta cetogénica ha demostrado ser efectiva en el tratamiento de la epilepsia refractaria al reducir en un 50% el número de crisis convulsivas y mejorar la cognición de los pacientes, lo que la convierte en una opción viable para el manejo de esta afección. Sin embargo, es importante tener en cuenta que la dieta cetogénica también puede tener efectos secundarios.

The ketogenic diet has been used for many years as an alternative in the treatment of refractory epilepsy in children, which consists of a high consumption of fats, reduced amounts of carbohydrates and the necessary amounts of protein to allow the patient, through the production of ketones, a correct and adequate energy supply to the brain and the entire CNS. Objective. To describe the use of the ketogenic diet in the treatment of refractory epilepsy in children to determine its effectiveness in reducing seizures and improving the quality of life of patients. Methodology. A systematic review of the scientific literature was conducted to examine the relationship between the ketogenic diet and its effect in the treatment of refractory epilepsy in children. To identify and select sources of information, the PRISMA statement was applied and a comprehensive literature search was conducted in various electronic databases, including PubMed, SCOPUS and SCIELO. Specific descriptor terms such as "ketogenic diet", "influence", "treatment", "refractory epilepsy" and "children" were used, as well as connectors such as AND, OR or NOT to improve search precision. Conclusion. The ketogenic diet has been shown to be effective in the treatment of refractory epilepsy by reducing the number of seizures by 50% and improving patients' cognition, making it a viable option for the management of this condition. However, it is important to keep in mind that the ketogenic diet can also have side effects.

A dieta cetogênica tem sido usada há muitos anos como um tratamento alternativo para epilepsia refratária em crianças, consistindo em um alto consumo de gorduras, quantidades reduzidas de carboidratos e as quantidades necessárias de proteínas para permitir ao paciente, por meio da produção de cetonas, um fornecimento correto e adequado de energia para o cérebro e todo o SNC. Objetivo. Descrever o uso da dieta cetogênica no tratamento da epilepsia refratária em crianças, a fim de determinar sua eficácia na redução das crises e na melhoria da qualidade de vida dos pacientes. Metodologia. Foi realizada uma revisão sistemática da literatura científica para examinar a relação entre a dieta cetogênica e seu efeito no tratamento da epilepsia refratária em crianças. Para identificar e selecionar as fontes de informação, foi aplicada a declaração PRISMA e realizada uma pesquisa abrangente da literatura em vários bancos de dados eletrônicos, incluindo PubMed, SCOPUS e SCIELO. Foram usados termos descritores específicos, como "dieta cetogênica", "influência", "tratamento", "epilepsia refratária" e "crianças", além de conectores como AND, OR ou NOT para melhorar a precisão da pesquisa. Conclusão. A dieta cetogênica demonstrou ser eficaz no tratamento da epilepsia refratária, reduzindo o número de convulsões em 50% e melhorando a cognição dos pacientes, o que a torna uma opção viável para o tratamento dessa condição. Entretanto, é importante observar que a dieta cetogênica também pode ter efeitos colaterais.