Macro e micronutrientes na orientação nutricional para obesidade

Obesity is a chronic disease and has become an epidemic throughout the world. Its etiology is multifactorial and the treatment is complex, involving diet, physical exercises, drugs and, in more serious cases, surgery. According to national and international guidelines and consensus, macronutrient distribution is around 35% to 65% of the total energy value (VET) of carbohydrates, 15 to 25% of the protein VET and 20 to 40% of the VET of lipids. Through a literature review, controversial recommendations were found. According to the critical analysis of the investigators involved and according to results of recent research, it was concluded that hypocaloric diet (restriction of 500 to 750 kcal / day), hyperproteic (> 25% of TEV), hypoglycemia and normolipid was effective in long weight loss and maintenance term. In relation to lipids, it was verified that the diet should be more qualitative, with the reduction in the intake of cholesterol, saturated and trans fats. Consumption of fiber should be stimulated. Restrictive diets have not been shown to be sustainable over a long period, but can be used over a given period. In addition, the high prevalence of micronutrient deficiency in individuals with obesity even before bariatric surgery was consensual among the authors. It was concluded that dietary adherence and, consequently, negative balance are decisive factors for the promotion of weight loss. Food planning should be flexible and individualized and the contact between the nutritionist and the patient should be constant, aiming at food re-education. This article performed a critical analysis of macro and micronutrient recommendations in obesity aiming to contribute to the dietary treatment of this population.A obesidade é uma doença crônica e tem se tornado uma epidemia em todo o mundo. Sua etiologia é multifatorial e o tratamento complexo, envolvendo dieta, exercícios físicos, fármacos e, em casos mais graves, cirurgia. De acordo com os guias e consensos, nacionais e internacionais, a distribuição dos macronutrientes fica em torno de 35% a 65% do valor energético total (VET) de carboidratos, 15 a 25% do VET de proteínas e 20 a 40% do VET de lipídios. Por meio de uma revisão de literatura, foram encontradas recomendações controversas. Conforme análise crítica dos pesquisadores envolvidos e de acordo com resultados de pesquisas recentes, concluiu-se que dieta hipocalórica (restrição de 500 a 750 kcal/dia), hiperproteica (>25% do VET), hipoglicídica e normolipídica foi eficaz na perda e manutenção do peso a longo prazo. Em relação aos lipídios, verificou-se que a dieta deve ser mais qualitativa, com a redução na ingestão de colesterol, gorduras saturadas e trans. O consumo de fibras deve ser estimulado. Dietas restritivas não se mostraram sustentáveis por um longo período, mas podem ser usadas em um período determinado. Além disso, a alta prevalência de deficiência de micronutrientes em indivíduos com obesidade foi consensual entre os autores, inclusive antes da cirurgia bariátrica. Concluiu-se que a adesão dietética e, consequentemente, o balanço negativo são fatores decisivos para a promoção da perda de peso.  O planejamento alimentar deve ser flexível e individualizado e o contato entre o nutricionista e o paciente deve ser constante, visando a reeducação alimentar. O presente artigo realizou uma análise crítica das recomendações de macro e micronutrientes na obesidade visando contribuir para o tratamento dietético dessa população

Long term maintenance of glucose and lipid concentrations after Roux-en-Y gastric bypass

Abstract Objective: Roux-en-Y gastric bypass (RYGB) reduces body weight and the comorbidities associated with obesity. The aim of this study was to evaluate whether glucose and lipid profiles were maintained during a 5-year follow-up period after RYGB. Subjects and methods: Anthropometric and laboratory data from 323 patients who had undergone this operation were analyzed. Differences in laboratory variables between the baseline and 12, 24, 36, 48 and 60 months postoperatively (PO) were assessed using a one-way ANOVA test to compare the three groups. Delta significance using one-way ANOVA was performed to assess anthropometric variable in the postoperative period (p < 0.05). Results: 77 patients (24%) were included in Group 1 (G1), 101 (32%) in Group 2 (G2), and 141 (44%) in Group 3 (G3). The majority of patients, 71.7% in G1, 82.8% in G2, and 70% in G3, showed high triglycerides (TG) before surgery. A decrease in weight loss was observed in all groups followed by an increase in body weight in G2 and G3 at 36, 48 and 60 months. Laboratory results for G1, G2 and G3 showed no significant differences between groups at baseline and during the post-operative period. Conclusion: Our results suggest that weight regain after RYGB has no significant impact on the long-term evolution of the lipid profile and glycemia

EFFECTS OF LONG-TERM ROUX-EN-Y GASTRIC BYPASS ON BODY WEIGHT AND CLINICAL METABOLIC COMORBIDITIES IN BARIATRIC SURGERY SERVICE OF A UNIVERSITY HOSPITAL

ABSTRACT Background: Due to the high failure rate observed in the clinical treatment of morbid obesity an increase in bariatric surgery indications, as an alternative for the control of obesity and comorbidities, is noticeable. Aim: To evaluate the performance of type 2 diabetes mellitus, high blood pressure and dyslipidemia in patients submitted to Roux-en-Y gastric bypass in late follow-up. Methods: Retrospective analysis of 59 patients included in the bariatric surgery program. Anthropometric (height and body weight) and laboratory (LDLc, HDLc, VLDLc, triglyceride -TG - and glucose) data were collected on pre- and postoperative stages, through medical records. Results: Among the patients, 86% were female aged 43±11, of whom 52% had attended high school. The average postoperative time was 7±3 years. During the postoperative period, there were decreases of weight and body mass index, respectively (133±06 kg vs 91±04 kg p<0.05 e 49±74 kg/m2 vs 33±79 kg/m2, p<0.05). In comparison to the preoperative stage, lower concentrations of glucose (101.00±26.99 vs 89,11±15.19, p=0.014), total cholesterol rates (179.00±37,95 vs 167.48±28,50, p=0.016), LDLc (104.30±33.12 vs 91.46±24.58, p=0.016), VLDLc (25.40±11,12 vs 15.68±7.40, p<0.01), and TG (143.35±86.35 vs 82.45±37.39, p<0.01) and higher concentrations of HDLc (43.53±8.23 vs 57.90±15.60, p<0.01) were identified in the postoperative stage. 40% of hypertensive patients were still undergoing high blood pressure treatment during the postoperative stage. There was remission of type 2 diabetes mellitus and dyslipidemia on 81% and 94% of the cases, respectively. Conclusion: Roux-en-Y gastric bypass has proven itself to be an effective long term procedure, promoting weight loss, remission of DM2 and dyslipidemia

Long term maintenance of glucose and lipid concentrations after Roux-en-Y gastric bypass

<div><p>Abstract Objective: Roux-en-Y gastric bypass (RYGB) reduces body weight and the comorbidities associated with obesity. The aim of this study was to evaluate whether glucose and lipid profiles were maintained during a 5-year follow-up period after RYGB. Subjects and methods: Anthropometric and laboratory data from 323 patients who had undergone this operation were analyzed. Differences in laboratory variables between the baseline and 12, 24, 36, 48 and 60 months postoperatively (PO) were assessed using a one-way ANOVA test to compare the three groups. Delta significance using one-way ANOVA was performed to assess anthropometric variable in the postoperative period (p < 0.05). Results: 77 patients (24%) were included in Group 1 (G1), 101 (32%) in Group 2 (G2), and 141 (44%) in Group 3 (G3). The majority of patients, 71.7% in G1, 82.8% in G2, and 70% in G3, showed high triglycerides (TG) before surgery. A decrease in weight loss was observed in all groups followed by an increase in body weight in G2 and G3 at 36, 48 and 60 months. Laboratory results for G1, G2 and G3 showed no significant differences between groups at baseline and during the post-operative period. Conclusion: Our results suggest that weight regain after RYGB has no significant impact on the long-term evolution of the lipid profile and glycemia.</p></div