Food loss and food waste research in Latin America: scoping review.

The article aims to identify stage of the food supply chain (FSC) has the greatest food loss and waste (FLW), the factors that influence and economic, social and environmental impacts in Latin America countries. We carried out a scoping review of observational studies, case reports and interventional studies in January 2023. Searches were performed in scientific databases and hand-searching of reference lists. Data on the included studies were summarized with narrative synthesis. In total 16 articles met the inclusion criteria. The greatest FLW occur in the early and middle stages of the FSC, mainly during storage. The main causes were connected to financial, managerial and operational limitations related in harvesting techniques, storage and cooling facilities, infrastructure and marketing systems. Food waste (FW) is also a result of lack of appropriate storage facilities and efficient transport systems, market fluctuations and systems. Only one study presented results on the environmental impact of FW. There is a higher occurrence of food loss, characterized by decrease in the quantity and quality of food in the first three stages of FSC.

Barriers and facilitators to nutritional recommendations identified by participants of a cardiovascular rehabilitation program in a low resource context in Brazil.

OBJECTIVES: Nutritional recommendations, a core component of cardiovascular rehabilitation, play a vital role in managing cardiovascular diseases. However, adherence to these recommendations is complex, particularly in low-resource settings. This study explored the barriers and facilitators influencing adherence to nutritional recommendations among participants in a low-resource cardiovascular rehabilitation program in Brazil. METHODS: A mixed-methods approach was employed. Sociodemographic data, the Mediterranean diet score, scale for assessing nutrition, and open-ended questions on adherence were collected. Those who completed the questionnaires (phase 1) were invited to participate in one focus group session (phase 2). The participants were characterized according to the responses provided in phase 1 (Mediterranean diet score and scale for assessing nutrition) in low adherence or high adherence to dietary practice. Descriptive statistics and thematic content analysis within the context of the theory of planned behavior were employed. RESULTS: Seventy-four participants completed phase 1, with 41.9% classified into low adherence and 27.0% in high adherence; of those, 17 participated in phase 2. Focus group findings revealed 9 themes/29 subthemes. Barriers included food prices, income, knowledge, routine, food access, family patterns, disease, work, anxiety, eating habits, and food planning. Facilitators included affordable food, health considerations, taste preferences, knowledge, family/professional support, government assistance, personal willpower, income stability, easy food access, media influence, and a quiet eating place. CONCLUSIONS: The study findings underscore the need for targeted interventions, including individualized meal planning, community engagement, and enhanced access to healthcare professionals, to optimize dietary adherence and improve cardiovascular outcomes.

Association between nutrition intake and muscle mass in adult inpatients receiving nutrition support: A prospective cohort study.

OBJECTIVE: The present study aimed to evaluate the association between muscle mass variation, estimated by different equations, during hospitalization with the energy and protein intake and clinical and nutrition outcomes of patients using nutrition support. METHODS: A prospective observational study with patients older than 18 years in use of enteral and/or parenteral nutrition therapy and monitored by the Nutritional Therapy Committee between December 14, 2021, and December 14, 2022. Data were collected from the electronic records and were applied in 11 equations to estimate the four different portions of muscle mass of patients receiving nutrition support at the beginning and the end of hospitalization. RESULTS: A total of 261 patients were evaluated, with a median age of 61.0 (49.0-69.75) years, and 106 were women (40.6%). According to the nutrition diagnosis, several participants had severe malnutrition (39.5%). The most muscle mass estimation equations indicated a reduction of muscle mass during hospitalization. All patients presented negative energy and protein balances during hospitalization, but greater protein intake increased the lean soft tissue. Also, the greater the number of infections, metabolic complications, and scheduled diet interruption, the greater was the chance of losing muscle mass. CONCLUSION: There can be an association between the variation in muscle mass and energy and protein intake during hospitalization of patients using nutrition support. In addition, variation in muscle mass was associated with complications from nutrition support. The results emphasize the importance of anthropometric measurements to estimate muscle mass when other methods are not available.

Comparison of pre- and posttransplant energy expenditure in patients undergoing hematopoietic stem cell transplantation and evaluation of associated factors.

OBJECTIVES: Patients undergoing hematopoietic stem cell transplantation may present with metabolic alterations that can have an effect on their energy expenditure and nutritional status. This project aimed to compare the pre- and posttransplant energy expenditures of patients undergoing hematopoietic stem cell transplantation as well as related factors. METHODS: This prospective study was conducted at a single center. Patients, undergoing autograft or allograft, were evaluated before transplantation and on the 10th and 17th d posttransplantation. Energy expenditure was measured by indirect calorimetry. Diet intake was assessed by a 24-h dietary recall. Infectious and noninfectious complications were analyzed between days 1 to 10 after transplantation and days 11 to 17 after transplantation. Paired model analyses were carried out to identify the pretransplantation and posttransplantation periods. RESULTS: Twenty patients were evaluated with a mean age of 45.6 ± 17.2 y; a majority were male sex (65%), and the most frequent diagnoses were chronic myeloid leukemia (25%) and multiple myeloma (25%). Energy expenditure increased by 15% posttransplantation, and the energy requirement per kilogram of weight was 23 kcal/kg at day 10 after transplantation. Throughout the posttransplantation period, 45% of the patients required nutritional therapy. Negative energy and negative protein balance were observed at all analyzed times. Phase angle (P = 0.018), fever (P = 0.014), mucositis grades I to II (P = 0.018), and the total number of infectious and noninfectious events (P = 0.043) were associated with an increase in energy expenditure at day 10 after transplantation. CONCLUSIONS: Energy expenditure increased after transplantation compared with pretransplantation in 50% of patients. Phase angle, fever, grades I to II mucositis, and infectious and noninfectious events were associated with increased energy expenditure at day 10 after transplantation.

Eventos adversos pós-vacina contra o papilomavírus humano em adolescentes: revisão sistemática da literatura / Adverse events following human papillomavirus vaccine in adolescents: systematic review of the literature / Eventos adversos tras la vacuna contra el virus del papiloma humano en adolescentes: revisión sistemática de la literatura

Objetivo: O objetivo desse estudo foi investigar a ocorrência de Eventos Supostamente Atribuídos a Vacinação e/ou Imunização associados à vacina Papilomavírus Humano entre adolescentes de ambos os sexos. Métodos:Trata-se de uma revisão sistemática, realizada segundo os preceitos do Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Resultados: Inicialmente, foram identificados 11.016 artigos e, após a remoção de duplicidades, restaram 6.824. Destes, 59 foram selecionados para leitura na íntegra. Ao final, nove estudos compuseram a amostra. Os resultados indicam que a maioria dos Eventos Supostamente Atribuídos a Vacinação e/ou Imunização foram leves e moderados, prevalecendo eventos no local da injeção, como a dor e edema. Os Eventos Supostamente Atribuídos a Vacinação e/ou Imunização sistêmicos mais frequentes foram a febre, cefaleia, fadiga e tontura. Conclusão: A vacina contra o Papilomavírus Humano para os adolescentes é segura, reforçando-se sua importância como estratégia para diminuir as taxas de incidência dos cânceres associados ao Papilomavírus Humano.

Objective: The objective of this study was to investigate the occurrence of Events Supposedly Attributable to Vaccination and/or Immunization associated with the Human Papillomavirus vaccine among adolescents of both sexes. Methods: This is a systematic review carried out according to the principles of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Results: Initially, 11,016 articles were identified, of which 6,824 remained after removing duplicates, and 59 of these were selected for full reading. The sample comprised nine studies. The results indicate that most Events Supposedly Attributable to Vaccination and/or Immunization were mild and moderate, and events at the injection site, such as pain and edema, prevailed. The most common systemic Events Supposedly Attributable to Vaccination and/or Immunization were fever, headache, fatigue and dizziness. Conclusion: The Human Papillomavirus vaccine for adolescents is safe, reinforcing its importance as a strategy to reduce the incidence rates of Human Papillomavirus associated cancers

Objetivo: El objetivo de este estudio fue investigar la ocurrencia de Eventos Supuestamente Atribuibles a la Vacunación o Inmunización asociados a la Vacuna contra el Virus del Papiloma Humano entre adolescentes de ambos sexos. Métodos: Se trata de una revisión sistemática realizada según la declaración Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Resultados:Se identificaron 11.016 artículos y, tras eliminar duplicados, quedaron 6.824. De ellos, 59 fueron seleccionados para lectura completa. La muestra estuvo compuesta por nueve estudios. Los resultados indican que la mayoría de los Eventos Supuestamente Atribuibles a la Vacunación o Inmunización fueron leves y moderados, prevaleciendo los eventos en el lugar de la inyección, como dolor y edema. Los Eventos Supuestamente Atribuibles a la Vacunación o Inmunización sistémicos más comunes fueron fiebre, dolor de cabeza, fatiga y mareos. Conclusión: La vacuna contra el Virus del Papiloma Humano para adolescentes es segura, lo que refuerza su importancia como estrategia para reducir las tasas de incidencia de cánceres asociados al Virus del Papiloma Humano.

Prediction equations to estimate muscle mass using anthropometric data: a systematic review.

CONTEXT: Reduced muscle mass is linked to poor outcomes in both inpatients and outpatients, highlighting the importance of muscle mass assessment in clinical practice. However, laboratory methods to assess muscle mass are not yet feasible for routine use in clinical practice because of limited availability and high costs. OBJECTIVE: This work aims to review the literature on muscle mass prediction by anthropometric equations in adults or older people. DATA SOURCES: The following databases were searched for observational studies published until June 2022: MEDLINE, Embase, Scopus, SPORTDiscus, and Web of Science. DATA EXTRACTION: Of 6437 articles initially identified, 63 met the inclusion criteria for this review. Four independent reviewers, working in pairs, selected and extracted data from those articles. DATA ANALYSIS: Two studies reported new equations for prediction of skeletal muscle mass: 10 equations for free-fat mass and lean soft tissue, 22 for appendicular lean mass, 7 for upper-body muscle mass, and 7 for lower-body muscle mass. Twenty-one studies validated previously proposed equations. This systematic review shows there are numerous equations in the literature for muscle mass prediction, and most are validated for healthy adults. However, many equations were not always accurate and validated in all groups, especially people with obesity, undernourished people, and older people. Moreover, in some studies, it was unclear if fat-free mass or lean soft tissue had been assessed because of an imprecise description of muscle mass terminology. CONCLUSION: This systematic review identified several feasible, practical, and low-cost equations for muscle mass prediction, some of which have excellent accuracy in healthy adults, older people, women, and athletes. Malnourished individuals and people with obesity were understudied in the literature, as were older people, for whom there are only equations for appendicular lean mass. SYSTEMATIC REVIEW REGISTRATION: PROSPERO registration number CRD42021257200.

A Scoping Review of Observational Studies on Food and Beverage Advertising on Social Media: A Public Health Perspective.

Popular social media platforms have been actively used by ultra-processed food companies to promote their products. Being exposed to this type of advertising increases the consumption of unhealthy foods and the risk of developing obesity and other non-communicable diseases (NCDs). Thus, monitoring commercial content on social media is a core public health practice. We aimed to characterize the methods used for monitoring food advertising on social media and summarize the investigated advertising strategies via a scoping review of observational studies. This study is reported according to the MOOSE Statement, and its protocol was registered with the PROSPERO International Prospective Register of Systematic Reviews (registration nº. CRD42020187740). Out of the 6093 citations retrieved, 26 met our eligibility criteria. The studies were published from 2014 to 2021, mostly after 2018. They focused on Australia, Facebook, strategies aimed at children and adolescents, and advertising practices of ultra-processed food companies. We grouped strategies in eight classes: post features (n = 18); connectivity and engagement (n = 18); economic advantages, gifts, or competitions (n = 14); claims (n = 14); promotional characters (n = 12); brand in evidence (n = 8); corporate social responsibility or philanthropy (n = 7); and COVID-19 (n = 3). We found similarities in the investigation of strategies regardless of the type of social media. Our findings can contribute to the designing of tools for monitoring studies and regulatory mechanisms to restrict the exposure of food advertising.

Total cholesterol and low-density lipoprotein alterations in children and adolescents from Brazil: a prevalence meta-analysis

ABSTRACT Objective: The aim of the present study was to evaluate the prevalence of total cholesterol (TC) and low-density lipoprotein (LDL) alterations in children and adolescents in Brazil. Materials and methods: A systematic review and meta-analysis of prevalence. The search for articles was carried out in the databases: Medline (PubMed), Embase, Scientific Electronic Library Online (SciELO), Latin American and Caribbean Literature in Health Sciences (Lilacs). The meta-analysis was performed using the random effects model. The I² test was used to identify heterogeneity. Results: The present metanalysis revealed a significant prevalence of altered lipid profile in children and adolescents in Brazil. Regarding lipoprotein fractions, the prevalence of altered TC level was 27.47% (95% CI 24.36-30.82), and a smaller prevalence was observed for LDL cholesterol (19.29% - 95% CI 15.21-24.16). The models revealed high heterogeneity (I² = 99%; p < 0.01), however the precise source of it was not identified; although type of school, age group, year and the region of Brazil appeared to influence the estimations of altered lipid profiles. Conclusion: An important prevalence of lipid alterations was observed among Brazilian children and adolescents. Those results reinforce the importance of knowing the lipid profile of children and adolescents to perform early interventions for this public.

Environmental factors associated with excessive gestational weight gain: a meta-analysis and systematic review.

The aim is, systematically examine the scientific evidences that associated environmental factors (environment, social environment, environmental planning and spatial population distribution) with the excessive gestational weight gain. A meta-analysis and systematic review carried out as per the Cochrane Handbook recommendations and following the steps recommended by the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes. The inclusion studies were done with the following PECO criteria: P-pregnant women, E-environmental factors, O-weight gain. The search procedure was conducted on the databases EMBASE, Web of Science, Cinahl, LILACS and MEDLINE (PubMed). The relationship between the socioeconomic factors of the micro-region of residence and gestational weight gain was evidenced by the linkage between residing in high-poverty neighborhoods and inadequate gestational weight gain. This study revealed the higher prevalence of excessive gestational weight gain in pregnant women those lives in urban areas. Environmental factors of the pregnant women's residence area implicated in the excessive gestational weight gain. Our findings can therefore contribute to the development of public policies to prevent inadequate gestational weight gain.

Environmental factors associated with excessive gestational weight gain: a meta-analysis and systematic review / Fatores ambientais associados ao ganho de peso gestacional excessivo: uma meta-análise e revisão sistemática

Abstract The aim is, systematically examine the scientific evidences that associated environmental factors (environment, social environment, environmental planning and spatial population distribution) with the excessive gestational weight gain. A meta-analysis and systematic review carried out as per the Cochrane Handbook recommendations and following the steps recommended by the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes. The inclusion studies were done with the following PECO criteria: P-pregnant women, E-environmental factors, O-weight gain. The search procedure was conducted on the databases EMBASE, Web of Science, Cinahl, LILACS and MEDLINE (PubMed). The relationship between the socioeconomic factors of the micro-region of residence and gestational weight gain was evidenced by the linkage between residing in high-poverty neighborhoods and inadequate gestational weight gain. This study revealed the higher prevalence of excessive gestational weight gain in pregnant women those lives in urban areas. Environmental factors of the pregnant women's residence area implicated in the excessive gestational weight gain. Our findings can therefore contribute to the development of public policies to prevent inadequate gestational weight gain.

Resumo O objetivo é examinar sistematicamente as evidências científicas que associam fatores ambientais (meio ambiente, meio ambiente social, planejamento ambiental e distribuição espacial da população) com o excessivo ganho de peso gestacional. Trata-se de uma revisão sistemática e meta-análise realizada seguindo os passos recomendados pelo Preferred Reporting Items for Systematic Reviews and Meta-Analyzes. Os estudos de incluídos basearam-se nos seguintes critérios PECO: P-gestantes, E-fatores ambientais, O-ganho de peso gestacional. O procedimento de pesquisa foi conduzido nas bases de dados EMBASE, Web of Science, Cinahl, LILACS e MEDLINE (PubMed). A relação entre os fatores socioeconômicos da microrregião de residência e o ganho de peso gestacional foi evidenciada pela ligação entre a residência em bairros de alta pobreza e o ganho de peso gestacional inadequado. Este estudo revelou a maior prevalência de ganho de peso gestacional excessivo em gestantes que vivem em áreas urbanas. Fatores ambientais da área de residência das gestantes implicados no ganho de peso gestacional excessivo. As descobertas desse estudo podem, portanto, contribuir para o desenvolvimento de políticas públicas para evitar o ganho de peso gestacional inadequado.

Total cholesterol and low-density lipoprotein alterations in children and adolescents from Brazil: a prevalence meta-analysis.

Objective: The aim of the present study was to evaluate the prevalence of total cholesterol (TC) and low-density lipoprotein (LDL) alterations in children and adolescents in Brazil. Subjects and methods: A systematic review and meta-analysis of prevalence. The search for articles was carried out in the databases: Medline (PubMed), Embase, Scientific Electronic Library Online (SciELO), Latin American and Caribbean Literature in Health Sciences (Lilacs). The meta-analysis was performed using the random effects model. The I2 test was used to identify heterogeneity. Results: The present metanalysis revealed a significant prevalence of altered lipid profile in children and adolescents in Brazil. Regarding lipoprotein fractions, the prevalence of altered TC level was 27.47% (95% CI 24.36-30.82), and a smaller prevalence was observed for LDL cholesterol (19.29% - 95% CI 15.21-24.16). The models revealed high heterogeneity (I2 = 99%; p < 0.01), however the precise source of it was not identified; although type of school, age group, year and the region of Brazil appeared to influence the estimations of altered lipid profiles. Conclusion: An important prevalence of lipid alterations was observed among Brazilian children and adolescents. Those results reinforce the importance of knowing the lipid profile of children and adolescents to perform early interventions for this public.

Medida do equilíbrio de decisões para redução do peso corporal entre pessoas com sobrepeso ou obesidade: uma revisão sistemática / Measuring the balance of decisions to reduce body weight among overweight or obesity people: a systematic review

Abordagens comportamentais têm contribuído para a efetividade do tratamento da obesidade. A avaliação do equilíbrio de decisões (ED) para redução de peso, isto é, o equilíbrio entre prós e contras da mudança de comportamento, é estratégica no tratamento, contribuindo para a pactuação de estratégias para o enfrentamento dos desafios. É necessário, porém, utilizar instrumentos válidos para mensurar o ED. Objetivo: Avaliar a qualidade de instrumentos de avaliação do ED para redução do peso corporal visando qualificar o cuidado da pessoa com obesidade no Sistema Único de Saúde (SUS). Métodos: Realizou-se revisão sistemática da literatura sobre o desenvolvimento e a validação de instrumentos em sete bases de dados seguindo a metodologia Cosmin. Variações dos termos psicometria, obesidade e ED foram combinadas com operadores booleanos. Em duplicada e independentemente, duas pesquisadoras realizaram: extração de dados, avaliação da qualidade e síntese de evidências, sendo as divergências solucionadas por consenso. Esta revisão foi registrada na base internacional Prospero (CRD42020197797). Resultados: Identificaram-se cinco estudos, sendo que três realizaram a tradução e adaptação transcultural do mesmo instrumento. Todos os estudos apresentaram ED em duas dimensões (prós e contras), mas usaram métodos duvidosos ou inadequados, e a maioria apresentou evidências científicas de muito baixa qualidade. Conclusões: Os resultados não sustentaram o uso dos instrumentos existentes nem sua tradução e adaptação transcultural, sendo necessário o desenvolvimento de um novo instrumento. Este estudo, ao disponibilizar um instrumento válido para uso no SUS, poderá contribuir para qualificar o cuidado da pessoa com obesidade e deter o crescimento da obesidade no país.

Introduction: Behavioral strategies have been adding to the effectiveness of obesity treatment. And the assessment of the decisional balance (DB) for weight reduction, that is, the balance between expected losses and gains around the behavioral changes, is strategic for managing obesity. The DB assessment may contribute to the agreement on strategies to face the challenges of the treatment. But, there is a need to use a valid instrument to assess the DB. Objective: evaluate the quality of instruments assessing DB for weight reduction to qualify obesity management in the Sistema Único de Saúde ­ SUS (Unified Health System). Methods: A systematic review of studies about instrument development and/or validation was carried out on seven databases using the Cosmin methodology. Terms related to psychometrics, obesity, and DB were combined with Boolean operators to guide the search. Two researchers performed independently and in duplicate: data extraction, quality assessment, and evidence synthesis, and divergences were resolved by consensus. This review was registered in the international database Prospero (CRD42020197797). Results: Five studies were identified. Three of them reported translations and cross-cultural validity of the same instrument. All analyses presented DB in two dimensions (pros and cons, but used doubtful or inadequate methods. Most of the evidence was very low rate. Conclusions: The results did not support the instrument's use, translations, or cross-cultural adaptation. It is necessary to develop a new tool. By providing a valid instrument for use in SUS, this study could contribute to qualifying the care of people with obesity and stopping the growth of obesity in the country.

Medida do equilíbrio de decisões para redução do peso corporal entre pessoas com sobrepeso ou obesidade: uma revisão sistemática / Measuring the balance of decisions to reduce body weight among overweight or obesity people: a systematic review

Introdução: Abordagens comportamentais têm contribuído para a efetividade do tratamento da obesidade. A avaliação do equilíbrio de decisões (ED) para redução de peso, isto é, o equilíbrio entre prós e contras da mudança de comportamento, é estratégica no tratamento, contribuindo para a pactuação de estratégias para o enfrentamento dos desafios. É necessário, porém, utilizar instrumentos válidos para mensurar o ED. Objetivo: Avaliar a qualidade de instrumentos de avaliação do ED para redução do peso corporal visando qualificar o cuidado da pessoa com obesidade no Sistema Único de Saúde (SUS). Métodos: Realizou-se revisão sistemática da literatura sobre o desenvolvimento e a validação de instrumentos em sete bases de dados seguindo a metodologia Cosmin. Variações dos termos psicometria, obesidade e ED foram combinadas com operadores booleanos. Em duplicada e independentemente, duas pesquisadoras realizaram: extração de dados, avaliação da qualidade e síntese de evidências, sendo as divergências solucionadas por consenso. Esta revisão foi registrada na base internacional Prospero (CRD42020197797). Resultados: Identificaram-se cinco estudos, sendo que três realizaram a tradução e adaptação transcultural do mesmo instrumento. Todos os estudos apresentaram ED em duas dimensões (prós e contras), mas usaram métodos duvidosos ou inadequados, e a maioria apresentou evidências científicas de muito baixa qualidade. Conclusões: Os resultados não sustentaram o uso dos instrumentos existentes nem sua tradução e adaptação transcultural, sendo necessário o desenvolvimento de um novo instrumento. Este estudo, ao disponibilizar um instrumento válido para uso no SUS, poderá contribuir para qualificar o cuidado da pessoa com obesidade e deter o crescimento da obesidade no país.

Introduction: Behavioral strategies have been adding to the effectiveness of obesity treatment. And the assessment of the decisional balance (DB) for weight reduction, that is, the balance between expected losses and gains around the behavioral changes, is strategic for managing obesity. The DB assessment may contribute to the agreement on strategies to face the challenges of the treatment. But, there is a need to use a valid instrument to assess the DB. Objective: evaluate the quality of instruments assessing DB for weight reduction to qualify obesity management in the Sistema Único de Saúde ­ SUS (Unified Health System). Methods: A systematic review of studies about instrument development and/or validation was carried out on seven databases using the Cosmin methodology. Terms related to psychometrics, obesity, and DB were combined with Boolean operators to guide the search. Two researchers performed independently and in duplicate: data extraction, quality assessment, and evidence synthesis, and divergences were resolved by consensus. This review was registered in the international database Prospero (CRD42020197797). Results: Five studies were identified. Three of them reported translations and cross-cultural validity of the same instrument. All analyses presented DB in two dimensions (pros and cons, but used doubtful or inadequate methods. Most of the evidence was very low rate. Conclusions:The results did not support the instrument's use, translations, or cross-cultural adaptation. It is necessary to develop a new tool. By providing a valid instrument for use in SUS, this study could contribute to qualifying the care of people with obesity and stopping the growth of obesity in the country.

Consumption of sourdough bread and changes in the glycemic control and satiety: A systematic review.

The aim of this study was to carry out a systematic review of clinical trials followed by meta-analysis, to evaluate the effect of sourdough bread on glycemic control and appetite and satiety regulators such as leptin, ghrelin, GLP-1 (glucagon-like peptide-1), GLP-2 (glucagon-like peptide-2), NPY (neuropeptide Y), AgRP (agouti-related protein), PYY (peptide YY), and GIP (glucose-dependent insulinotropic polypeptide). Clinical trials compared the intake of sourdough bread to that of an industrially fermented one or control glucose solution in adults over 18 years of age. This systematic review included all randomized, parallel, or crossover trials published up to June 2021 in the EMBASE, MEDLINE, Scopus, and Web of Science databases. After the selection process, 18 studies were included. The analysis of the final average difference of the change in serum glucose after 60 minutes for the intervention indicated that the consumption of sourdough bread has a lower impact on blood glucose compared to that of industrial bread or glucose (MD = -0.29, IC 95% = [-0.46; -0.12]; I2 = 0%). The evaluation of blood glucose 120 minutes after the consumption of the intervention also indicated a lower increment in blood glucose when compared to the consumption of other types of bread or the same amount of glucose (MD = -0.21, IC 95% = [-0.32; -0.09]; I2 = 0%). The certainty of evidence varied from low to very low. The results showed that sourdough is effective in reducing the increment of postprandial glycemia, especially when prepared with whole wheat flour, although it does not reduce fasting serum insulin, nor does it change plasma PYY.

Plant-based diet index score is not associated with body composition: A systematic review and meta-analysis.

We hypothesized that a plant-based diet, without excluding any specific animal food, may be beneficial for body composition. This study aims to evaluate if the consumption of a plant-based diet affects body composition of adults, through a systematic review of the literature. The review was reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. The literature search was conducted in EMBASE, PubMed, Scopus, and Web of Science in February 2021. Cross-sectionals, interventional trials, and cohort studies were included if changes in the body composition were associated with plant-based index (PDI). Meta-analyses were performed using DerSimonian and Laird random effects model with 95% confidence intervals (CIs) even in the absence of statistical heterogeneity. A total of 6680 citations were found in the systematic search, and after the screening process, 12 studies were included. Of the 11 studies evaluating body mass index, 8 provided data of body mass index (BMI) from a total of 134,128 participants among the quantiles of PDI. A meta-analysis was performed (standardized mean difference [SMD] = 0.17 kg/m²; 95% CI, 0.02-0.32). Of the 7 studies that evaluated waist circumference (WC), 4 provided data of WC among the quantiles of PDI from a total of 12,968 participants. As with BMI, the pooled analysis indicated an increase (SMD = 0.50 kg/m²; 95% CI, 0.01-1.00) of WC as greater was the PDI. Both analyses were influenced by a large study, and in the sensitive analysis the significance was lost. Our findings did not reflect an association between a higher PDI and body composition. Also, most studies evaluating total and central adiposity did not find any association with the PDI. Probably, PDI must be considered in the context of food processing, considering that not all vegetable foods are healthy.

Understanding weight regain after a nutritional weight loss intervention: Systematic review and meta-analysis.

BACKGROUND & AIMS: The purpose of this systematic review was to analyze the effects of lifestyle interventions on long-term weight maintenance of weight loss. In addition, we seek to address which period is most susceptible to weight regain; and what is the time required for following-up weight maintenance after the intervention. METHODS: Articles published up to August 2020 were identified using the Medline (PubMed), Embase, Web of Science, CENTRAL and Scopus. RESULTS: After the selection process, 27 clinical trials involving 7236 individuals were included. The results showed that around 36 weeks after the end of the intervention, weight variation reduces, and a sign of continuous weight gain begin to occur with some patients (n = 208,209) presenting even a completely regain of the lost weight before one year (∼40-48 weeks). However, some strategies used during the weight loss intervention and maintenance period may impact the amount and when the weight regain happens, like intervention type;, intervention duration;, presence of dietitian on the care team;, and maintenance period with counseling by a health professional at least once a month. CONCLUSION: This systematic review and meta-analysis showed that lifestyle interventions remained effective in maintaining the mean weight (5% lower than baseline weight) after weight loss interventions were over. However, weight regain started 36 weeks after intervention conclusion. And, it turns out, some strategies used during the weight loss intervention and maintenance period may impact the amount and when the weight regain happens. Obesity complexity and chronicity should be considered, therefore constant and lifelong monitoring and support are important.

Impact of oral or enteral nutritional support on clinical outcomes of patients subjected to cardiac surgery: A systematic review.

BACKGROUND: Cardiovascular diseases represent the leading cause of death worldwide, in addition to having a direct negative impact on quality of life, functional capacity and nutritional status. Studies show high prevalence of malnutrition in patients undergoing cardiac surgery. It is known that cardiac surgery can also lead to changes in nutritional status, through surgical trauma, systemic inflammation and, often, delay in the initiation of nutritional support. On the other hand, the role of nutritional support as a driver of clinical outcomes in different surgical populations is well described in the literature. OBJECTIVE: To review the literature in order to assess the effect of perioperative oral or enteral nutritional support on clinical outcomes of cardiac patients undergoing cardiac surgery. METHODOLOGY: The search was conducted in February 2021 in the following databases: EMBASE, PubMed/MEDLINE, Scopus and Web of Science. Randomized clinical trials (RCT) and retrospective studies were selected, carried out with patients with heart disease, undergoing cardiac surgery and aged 18 years or over. The Outcomes of interest were: length of hospital stay, length of stay in the ICU, time on ventilatory support, mortality rate, clinical complications and use of vasoactive drugs in the postoperative period. RESULTS: Ten studies were included in this systematic review, of which 7 were RCTs and 3 were cohorts. The most prevalent surgery was myocardial revascularization. Six studies evaluated oral nutritional support, two enteral nutritional support and two analyzed both. Two studies found a significant reduction in the length of hospital and ICU staying associated with preoperative intake of carbohydrate-based beverages. Only one study observed a significant reduction in the requirement for ventilatory support after cardiac surgery, after preoperative carbohydrate-based drinks and early postoperative enteral nutrition. There was no influence of nutritional support on mechanical ventilation length and mortality. CONCLUSION: Most studies showed that nutritional support did not reduce hospital and ICU staying. Nutritional support benefits were demonstrated in studies that offered preoperative oral carbohydrate drinks. No association was observed between nutritional support and duration of mechanical ventilation or mortality rate. Most studies did not find any influence of nutritional support on the need and/or dosage of vasoactive drugs in the postoperative period of cardiac surgery.

Ruminant and industrial trans-fatty acids consumption and cardiometabolic risk markers: A systematic review.

The development of cardiometabolic diseases is related to conditions such as obesity, abdominal fat, insulin resistance, diabetes mellitus, elevated blood pressure and changes in lipid profile. The whole of Trans Fatty Acid (TFA) intake is associated with the increase of cardiometabolic risk factors. There are two main sources of TFA, the ruminant TFA (rTFA) which are produced by biohydrogenation in animal's rumen, and the industrial TFA (iTFA), produced by hydrogenation of vegetable oils, the individual effect of each group is still controversial. The aim of this study was to analyze the effect of industrially and ruminants TFA intake on cardiometabolic risk in adults. It was carried out a systematic search of the literature in October 2019 and two independent authors selected and extracted data from articles. After the selection process, nine clinical trials were included, and summary tables were constructed to present data for all outcomes. The results showed that both sources of TFA can increase cardiometabolic risk parameters, especially lipid profile. At levels up to 1.5%-7% of energy, the effect of rTFA seems to be greater than iTFA and it seems to be greater in women. However, rTFA seems to be less harmful than iTFA for High Density Lipoprotein cholesterol, although for total cholesterol and Low density Lipoprotein cholesterol it may be worse. In summary, both sources of TFA can increase cardiometabolic risk parameters, especially lipid profile. However, the dose of TFA and the whole composition of the food must be considered.

Longitudinal effect of nutritional intervention on body weight: A randomized controlled trial.

OBJECTIVES: This study evaluates, in the medium and long term (12, 36, and 48 mo), the effect of an intervention to promote consumption of fruit and vegetables on the body weight of Brazilian primary health care users. METHODS: A follow-up with participants (n = 3414) in a controlled randomized trial was performed in a primary health care service. Those in the control group performed the service's usual intervention (guided physical exercise 3 times/wk), and those in the intervention group additionally participated for 7 mo in collective activities to promote consumption of fruit and vegetables. Sociodemographic, health, and body weight data were collected by face-to-face interview at baseline and after 12 mo. At 36 and 48 mo, weight was obtained by telephone interview and was validated. Adherence to the intervention was assessed by the presence of the actions. Weight change (Δ) was measured by subtracting the weight at each follow-up time from the baseline measurement. RESULTS: Participants in both groups had a minor weight loss of about 0.1 kg over 12, 36, and 48 mo. The addition of an intervention for consumption of fruit and vegetables did not enhance this effect. Higher weight loss was observed in individuals with obesity classes II and III with low adherence in the intervention and after 36 mo (Δ = -27.1 kg; P = 0.024). CONCLUSIONS: Participating in the primary health care service contributed to a small reduction in weight, and the intervention for consumption of fruit and vegetables did not enhance this effect. However, greater weight loss was observed in participants with obesity and those who adhered to the intervention.