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The European Society for Clinical Nutrition and Metabolism published its first clinical guidelines for use of micronutrients (MNs) in 2022. A two-day web symposium was organized in November 2022 discussing how to apply the guidelines in clinical practice. The present paper reports the main findings of this symposium. Current evidence was discussed, the first day being devoted to clarifying the biology underlying the guidelines, especially regarding the definition of deficiency, the impact of inflammation, and the roles in antioxidant defences and immunity. The second day focused on clinical situations with high prevalence of MN depletion and deficiency. The importance of the determination of MN status in patients at risk and diagnosis of deficiencies is still insufficiently perceived, considering the essential role of MNs in immune and antioxidant defences. Epidemiological data show that deficiencies of several MNs (iron, iodine, vitamin D) are a global problem that affects human health and well-being including immune responses such as to vaccination. Clinical conditions frequently associated with MN deficiencies were discussed including cancer, obesity with impact of bariatric surgery, diseases of the gastrointestinal tract, critical illness, and aging. In all these conditions, MN deficiency is associated with worsening of outcomes. The recurrent problem of shortage of MN products, but also lack of individual MN-products is a worldwide problem. Despite important progress in epidemiology and clinical nutrition, numerous gaps in practice persist. MN depletion and deficiency are frequently insufficiently searched for in clinical conditions, leading to inadequate treatment. The symposium concluded that more research and continued education are required to improve patient outcome. [ABSTRACT FROM AUTHOR]

This opinion paper presents a short review of the potential impact of protein on muscle anabolism in cancer, which is associated with better patient outcomes. Protein source is a topic of interest for patients and clinicians, partly due to recent emphasis on the supposed non-beneficial effect of proteins; therefore, misconceptions involving animal-based (e.g., meat, fish, dairy) and plant-based (e.g., legumes) proteins in cancer are acknowledged and addressed. Although the optimal dietary amino acid composition to support muscle health in cancer is yet to be established, animal-based proteins have a composition that offers superior anabolic potential, compared to plant-derived proteins. Thus, animal-based foods should represent the majority (i.e., ≥65%) of protein intake during active cancer treatment. A diet rich in plant-derived proteins may support muscle anabolism in cancer, albeit requiring a larger quantity of protein to fulfill the optimal amino acid intake. We caution that translating dietary recommendations for cancer prevention to cancer treatment may be inadequate to support the pro-inflammatory and catabolic nature of the disease. We further caution against initiating an exclusively plant-based (i.e., vegan) diet upon a diagnosis of cancer, given the presence of elevated protein requirements and risk of inadequate protein intake to support muscle anabolism. Amino acid combination and the long-term sustainability of a dietary pattern void of animal-based foods requires careful and laborious management of protein intake for patients with cancer. Ultimately, a dietary amino acid composition that promotes muscle anabolism is optimally obtained through combination of animal- and plant-based protein sources. [ABSTRACT FROM AUTHOR]

This practical guideline is based on the current scientific ESPEN guidelines on nutrition in cancer patients. ESPEN guidelines have been shortened and transformed into flow charts for easier use in clinical practice. The practical guideline is dedicated to all professionals including physicians, dieticians, nutritionists and nurses working with patients with cancer. A total of 43 recommendations are presented with short commentaries for the nutritional and metabolic management of patients with neoplastic diseases. The disease-related recommendations are preceded by general recommendations on the diagnostics of nutritional status in cancer patients. This practical guideline gives guidance to health care providers involved in the management of cancer patients to offer optimal nutritional care. [ABSTRACT FROM AUTHOR]

Summary Background & aims Polymorbidity (also known as multimorbidity) – defined as the co-occurrence of at least two chronic health conditions – is highly prevalent, particularly in the hospitalized population. Nonetheless, clinical guidelines largely address individual diseases and rarely account for polymorbidity. The aim of this project was to develop guidelines on nutritional support for polymorbid patients hospitalized in medical wards. Methods The methodology used for the development of the current project follows the standard operating procedures for ESPEN guidelines. It started with an initial meeting of the Working Group in January 2015, where twelve key clinical questions were developed that encompassed different aspects of nutritional support: indication, route of feeding, energy and protein requirements, micronutrient requirements, disease-specific nutrients, timing, monitoring and procedure of intervention. Systematic literature searches were conducted in three different databases (Medline, Embase and the Cochrane Library), as well as in secondary sources (e.g. published guidelines), until April 2016. Retrieved abstracts were screened to identify relevant studies that were used to develop recommendations, which were followed by submission to Delphi voting rounds. Results From a total of 4532 retrieved abstracts, 38 relevant studies were analyzed and used to generate a guideline draft that proposed 22 recommendations and four statements. The results of the first online voting showed a strong consensus (agreement of >90%) in 68% of recommendations and 75% of statements, and consensus (agreement of >75–90%) in 32% of recommendations and 25% of statements. At the final consensus conference, a consensus greater than 89% was reached for all of the recommendations. Conclusions Despite the methodological difficulties in creating non-disease specific guidelines, the evidence behind several important aspects of nutritional support for polymorbid medical inpatients was reviewed and summarized into practical clinical recommendations. Use of these guidelines offer an evidence-based nutritional approach to the polymorbid medical inpatient and may improve their outcomes. [ABSTRACT FROM AUTHOR]

Summary Cancers are among the leading causes of morbidity and mortality worldwide, and the number of new cases is expected to rise significantly over the next decades. At the same time, all types of cancer treatment, such as surgery, radiation therapy, and pharmacological therapies are improving in sophistication, precision and in the power to target specific characteristics of individual cancers. Thus, while many cancers may still not be cured they may be converted to chronic diseases. All of these treatments, however, are impeded or precluded by the frequent development of malnutrition and metabolic derangements in cancer patients, induced by the tumor or by its treatment. These evidence-based guidelines were developed to translate current best evidence and expert opinion into recommendations for multi-disciplinary teams responsible for identification, prevention, and treatment of reversible elements of malnutrition in adult cancer patients. The guidelines were commissioned and financially supported by ESPEN and by the European Partnership for Action Against Cancer (EPAAC), an EU level initiative. Members of the guideline group were selected by ESPEN to include a range of professions and fields of expertise. We searched for meta-analyses, systematic reviews and comparative studies based on clinical questions according to the PICO format. The evidence was evaluated and merged to develop clinical recommendations using the GRADE method. Due to the deficits in the available evidence, relevant still open questions were listed and should be addressed by future studies. Malnutrition and a loss of muscle mass are frequent in cancer patients and have a negative effect on clinical outcome. They may be driven by inadequate food intake, decreased physical activity and catabolic metabolic derangements. To screen for, prevent, assess in detail, monitor and treat malnutrition standard operating procedures, responsibilities and a quality control process should be established at each institution involved in treating cancer patients. All cancer patients should be screened regularly for the risk or the presence of malnutrition. In all patients – with the exception of end of life care – energy and substrate requirements should be met by offering in a step-wise manner nutritional interventions from counseling to parenteral nutrition. However, benefits and risks of nutritional interventions have to be balanced with special consideration in patients with advanced disease. Nutritional care should always be accompanied by exercise training. To counter malnutrition in patients with advanced cancer there are few pharmacological agents and pharmaconutrients with only limited effects. Cancer survivors should engage in regular physical activity and adopt a prudent diet. [ABSTRACT FROM AUTHOR]

Summary: Background & aims: We aimed to test the capacity in identifying patients at nutritional risk, by comparing BMI, recent %weight loss,Nutritional Risk Screening 2002(NRS-2002),Malnutrition Universal Screening Tool(MUST) and Nutritional Risk Index(NRI) with Subjective Global Assessment(SGA),considered the Standard. The main purpose was to select the most consistent screening method for effective integration in daily surgical wards’ practice. Methods: 300 surgical patients were assessed at admission: BMI(categorized by WHO’s criteria), weight loss ≥5% in previous 6 months, NRS-2002, MUST, NRI, SGA. Concordances, correlations, sensitivity, specificity, positive(PPV) and negative predictive values(NPV) were calculated to evaluate methods’ performance vs the Standard. Results: Prevalence of nutritional risk was 66% by NRS-2002 + MUST, and 87% by NRI. By SGA, 64% patients were undernourished. All methods agreed with SGA(k = 0.85–0.91,p < 0.001), except BMI & NRI(k = 0.07–0.34,p < 0.05). NRS-2002, MUST and %weight loss effectively detected patients at risk: sensitivity 0.8–0.89, specificity 0.89–0.93, PPV 81%–89%, NPV 89%–100%. Conversely, BMI & NRI were ineffective: sensitivity 0.29–0.43, specificity 0.27–0.39, PPV 24%–35%, NPV 27%–31%; %weight loss alone vs MUST/NRS-2002 was explored: sensitivity 0.79–0.87, specificity 0.85–0.89, PPV 84%–85%, NPV 87%–89%, thus successfully identifying undernutrition risk. Conclusions: In surgical patients, MUST + NRS-2002 are valid for nutritional screening; recent weight loss ≥5% also proved highly efficient; its easy/quick calculation may facilitate adherence/integration by health professionals as a minimum obligatory in clinical practice. [Copyright &y& Elsevier]

Summary: Background & aims: NF-κB may promote carcinogenesis by altering cell cycle, inflammatory responses and apoptosis-related gene expression, though cell mechanisms relating diet and colorectal cancer (CRC) remain unveiled in humans. This study in patients with CRC aimed to explore potential interactions between the dietary pattern, nutrient intake, expression of NF-κB, apoptosis and tumour histological aggressiveness. Methods: Usual diet was assessed by diet history; nutrient composition was determined by DIETPLAN software. Histologically classified patient tissue samples (adenoma, adenocarcinoma and normal surrounding mucosa) were obtained via biopsies during colonoscopy (n =16) or surgery (n =8). NF-κB expression was determined by immunohistochemistry and apoptosis by TUNEL assay. Results: NF-κB expression and apoptosis were higher in tumours (p <0.01), greater along with histological aggressiveness (p <0.01). Highest intake terciles of animal protein, refined carbohydrates, saturated fat, n-6 fatty acids and alcohol were associated with higher NF-κB, apoptosis and histological aggressiveness (p <0.01); the opposite tissue characteristics were associated with highest intake terciles of n-3 fatty acids, fibre, vitamin E, flavonoids, isoflavones, β-carotene and selenium (p <0.002). Additionally, higher n-6:n-3 fatty acids ratio (median 26:1) was associated with higher NF-κB (p <0.006) and apoptosis (p <0.01), and more aggressive histology (p <0.01). Conversely, lower n-6:n-3 fatty acids ratio (median 6:1) was associated with lower NF-κB (p <0.002) and apoptosis (p <0.002), and less aggressive histology (p <0.002). Conclusions: NF-κB expression and apoptosis increased from adenoma to poorly differentiated adenocarcinoma. This degenerative transition, recognized as key in carcinogenesis, appear to have been influenced by a diet promoting a pro-inflammatory milieu that can trigger NF-κB. [Copyright &y& Elsevier]

Purpose: The purpose of this article was to investigate the influence of inflammatory cytokines, pro-cachectic (interleukin [IL]-1 receptor agonist [IL-1ra], IL-6, and tumor necrosis factor-or [TNF-a]), immunomodulatory (IL-10 and interferon-3, [IFN-3,]), and pro-angiogenic (vascular endothelial growth factor [VEGF]), on resting energy expenditure (REE), weight, and nutritional intake and to explore potential interactions between their circulating concentrations and colorectal cancer stage/histologic differentiation and response to radiotherapy (RT). Patients and Methods: This was a prospective longitudinal study in 101 patients evaluated before and after neoadjuvant RT, including REE (indirect calorimetry), percent weight loss, usual/current diet (diet history and 24-hour recall), serum concentrations of cytokines (enzyme-linked immunosorbent assay), and RT response. Results: Stages III/IV were often associated with histologic grades 2/3 (P < 0.01), albeit both characteristics independently were associated with higher concentrations of IL-1ra (P ≤ 0.05), IL-6 (P ≤ 0.02), TNF-α (P ≤ 0.05), IFN-γ, (P ≤ 0.05), and VEGF (P < 0.03). Before and after RT, higher REE, weight loss ≥5%, and intake reduction ≥25% were associated with advanced stage, histologic grades 2/3, higher IL-1ra, IL-6, TNF-α, IFN-γ, and VEGF, and nonresponse to RT (P = 0.003). A general linear model analysis showed that stages IIUIV, histologic grades 2/3, and higher IL-1ra, IL-6, TNF-α, IFN-γ, and VEGF were major determinants of REE increase, weight loss, and intake reduction. In predictive value analyses, higher baseline pro-cachectic cytokines (IL-1ra + IL-6 + TNF-α) by themselves predicted increased REE (hazard ratio [HR]: 8.25; 95% CI: 2.74-26.47; P < 0.002), greater weight loss (HR: 8.15; 95% CI: 2.22-25.40; P < 0.002), and intake reductions (HR: 7.15; 95% CI: 2.25-16.11; P < 0.004) aider RT. Conclusion: This study confirms the fact that wasting in colorectal cancer is correlated with tumor burden and histologic aggressiveness and suggests that both characteristics lead to overproduction of IFN-γ VEGF, and pro-cachectic cytokines, all of which may cause higher metabolic rates, poor intake, and non-response to RT. [ABSTRACT FROM AUTHOR]

Summary: To devise a meaningful nutritional therapy in cancer, a greater understanding of nutritional dimensions as well as patients’ expectations and disease impact is essential. We have shown that nutritional deterioration in patients with gastrointestinal and head and neck cancer was multifactorial and mainly determined by the tumour burden and location. In a larger cohort, stage and location were yet again the major determinants of patients’ quality of life (QoL), despite the fact that nutritional deterioration combined with intake deficits were functionally more relevant than cancer stage. Based on this framework, the potential role of integrated oral nutritional support on outcomes was investigated. In a pilot study using individualized nutritional counselling on a heterogeneous patient population, the achieved improvement of nutritional intake was proportional to a better QoL. The role of early nutritional support was further analysed in a prospective randomized controlled trial in head and neck cancer patients stratified by stage undergoing radiotherapy. Pre-defined outcomes were: nutritional status and intake, morbidity and QoL, at the end and 3 months after radiotherapy. Nutritional interventions, only given during radiotherapy, consisted of three randomization arms: (1) individualized nutritional counselling vs. (2) ad libitum diet+high protein supplements vs. (3) ad libitum diet. Nutritional interventions 1 and 2 positively influenced outcomes during radiotherapy; however, 3 months after its completion individualized nutritional counselling was the single method capable of sustaining a significant impact on patients’ outcomes. The early provision of the appropriate mixture of foods and textures using regular foods may modulate outcomes in cancer patients. [Copyright &y& Elsevier]

Summary: Background and aims: To assess the relationships between food intake and colorectal cancer risk. Methods: Systematic review of available prospective studies on dietary intake and colorectal cancer. Results: Twelve out of 15 studies found no significant relationship between vegetable intake and colorectal cancer risk; also, 11 out of 14 studies found no relationship with fruit consumption. Conversely, the combined consumption of vegetables and fruit reduced colorectal cancer risk in three out of six studies, although the relationship was somewhat inconsistent between genders and anatomical localizations. Most studies found no relationship between cancer risk and red meat (15 in 20) or processed meat (seven out of 11) consumption; still, most of the reported relative risks were above unity, suggesting that high consumption of red or processed meat might increase colorectal cancer risk. The consumption of white meat, fish/seafood, dairy products, coffee or tea was mostly unrelated to colorectal cancer risk, although the consumption of smoked or salted fish actually increased risk. Conclusions: The relationships between dietary intake and colorectal cancer risk might be less important than previously reported. The combined consumption of vegetables and fruit might be protective, whereas excessive consumption of meat or smoked/salted/processed food appears to be deleterious. [Copyright &y& Elsevier]

Summary: Background & aims: It is acknowledged the interrelationship between nutrition and cancer. Health professionals (HP) and caregivers play a central role in undernutrition prevention/treatment. Our aims were to appraise the knowledge of Oncology HP and cancer caregivers about undernutrition and nutritional supplements (NS) and to assess the relevance given to NS. Methods: 103HP and 394 adult caregivers of cancer patients were randomly selected to the inquiry. Results: HP and caregivers stated that cancer patients were at higher undernutrition risk (95%, p <0.001 & 57%, p <0.05, respectively) and considered that undernutrition increase cancer severity (85%, p <0.002 and 69%, p <0.01, respectively). The majority of the caregivers (65%, p <0.01) defined undernutrition as an inadequate food intake. Only 35% of caregivers were satisfied with the information received about nutrition. Once undernutrition was diagnosed, 46% physicians and 45% nurses advised the use of NS (p <0.05). Only 14% of caregivers knew cancer NS (p <0.001). Reasons for low NS consumption were price (60%, p <0.009) and lack of information (57%, p <0.01). Conclusions: For the HP involved in this study, cancer is a major risk factor for undernutrition and which in turn worsens the disease. The lack of knowledge about nutrition among caregivers was obvious. Proving information about prevention/consequences of undernutrition is essential. Professionals and caregivers agreed that NS can be an effective strategy when intake is limited, however the cost can be limiting. [ABSTRACT FROM AUTHOR]

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