Efficacy of Mealtime Interventions for Malnutrition and Oral Intake in Persons With Dementia: A Systematic Review.

Malnutrition and weight loss are highly prevalent in persons with Alzheimer's disease and related dementias. Oral intake is an important interventional target for addressing these nutritional consequences. However, the efficacy of interventions remains poorly understood as prior syntheses have failed to examine the impact of intervention approaches on malnutrition and hypothesized mechanisms of action in persons with dementia. This review aimed to determine the efficacy of mealtime interventions to improve oral intake and nutritional outcomes in persons with dementia. Four databases yielded 1712 studies, resulting in 32 studies that met inclusion criteria. Studies included education, environmental modifications, feeding, oral supplementation, and other pharmacologic/ecopsychological interventions. While the majority of studies reported statistically significant improvements in at least 1 nutritional outcome, study design and outcome measures were heterogenous with many lacking adequate statistical power or blinding. Collectively, we found moderate evidence to suggest the efficacy of oral supplementation, and preliminary evidence to suggest that feeding interventions, education, and environmental modifications may confer improvements. Findings clarify the state of existing evidence regarding various interventional strategies for improving malnutrition in persons with dementia. While some approaches are promising, adequately powered and rigorously designed multidimensional intervention trials are needed to inform clinical decision-making in real-world contexts.

Caloric compensation ability around the age of 1 year: Interplay with the caregiver-infant mealtime interaction and infant appetitive traits.

Previously, we demonstrated that infants' caloric compensation ability decreases between 11 and 15 months old. Here, we explored whether the inter-individual variation in infants' caloric compensation ability is associated with caregiver-infant interaction during laboratory test meals or with infant appetitive traits. To describe caregiver-infant interaction, we recorded feeding in laboratory ad libitum meals when the infants were 11 and 15 months old by using a connected weighing scale. We extracted the weight of each offered spoonful and the time interval between two spoonfuls. The caloric compensation score (COMPX) was assessed during the same meals. At 11 and 15 months old, the caregiver rated their infant's appetitive traits by completing the CEBQ-T. Student's t tests were applied to test the relationships between the variables describing the caregiver-infant interaction and the COMPX score. The relationships between the COMPX score or its change and the infants' appetitive traits were assessed with Kendall correlations. Regarding appetitive traits, the more the caloric compensation ability decreased between 11 and 15 months old, the more the infants were perceived as food responsive between these ages (τ = -0.36, p = 0.01, n = 28). At 11 months old, when the time interval between two spoonfuls was positively associated with the previous spoonful weight (i.e., a longer time interval after a larger spoonful weight), the infants exhibited a better caloric compensation ability (t = -2.1, p = 0.04, n = 38). Moreover, this study provides new evidence regarding the importance of a responsive feeding style by suggesting that adapting the feeding pace to the spoonful weight could be a favourable practice associated with better caloric compensation ability by the end of the first year. TRIAL REGISTRATION: This trial was registered at clinicals.gov as NCT03409042 (https://clinicaltrials.gov/ct2/show/NCT03409042).

Pathways of the association between maternal employment and weight status among women and children: Qualitative findings from Guatemala.

The double burden of malnutrition, defined by the coexistence of undernutrition and overweight, is well documented in low- and middle-income countries. However, the mechanisms by which employment may be related to maternal and child weight status in low- and middle-income countries are not well understood. We conducted in-depth interviews among 20 mothers who participated in Project MIEL, a contemporary trial which evaluated the effects of an integrated micronutrient supplement and parenting intervention in rural Guatemala. We utilized semi-structured interviews to explore the pathways by which maternal employment might influence bodyweight. Interviews were structured to explore the factors that mothers considered when deciding whether or not to participate in the labor force and how mothers perceived the influence of employment on determinants of their own bodyweight and that of their children. Themes were used to develop a conceptual framework. Mothers described four pathways through which employment could lead to changes in weight status: changes in food purchasing; improved household well-being; changes in time allocation; and psychological effects. Mothers described purchasing increased quantities and more varied types of food, as well as the purchase of energy-dense foods. Less time to devote to food preparation resulted in mothers preparing quicker meals and relying on substitute childcare. Mothers also expressed feelings of worry and neglect in relation to being employed, and perceived that these feelings would affect weight. A better understanding of these mechanisms is important for developing policies and programs to support women in the workplace and also reducing maternal and child overweight in Guatemala.

Contributions of mindful eating, intuitive eating, and restraint to BMI, disordered eating, and meal consumption in college students.

PURPOSE: Mindful eating and intuitive eating are promoted as means to circumvent potentially maladaptive dietary restraint while maintaining a healthy weight. Although theoretically related, no studies have examined the correlations between intuitive eating, mindful eating, and restraint in the same sample. This study sought to examine these constructs and their correlations with body mass index (BMI), eating-disordered behaviors, and meal consumption in a college sample. METHODS: Participants (N = 125) completed a laboratory taste-test meal and measures of each eating-related construct using the EDDS, IES, MEQ, and TFEQ-Restraint Subscale. RESULTS: Mindful eating, intuitive eating, and restraint were not strongly correlated. Hierarchical multiple regression analyses indicated that restraint and intuitive eating accounted for significant variance in disordered eating and BMI. Elevated restraint was associated with increased BMI and disordered eating; elevated intuitive eating was associated with decreased BMI and disordered eating. Mindful eating did not correlate with any outcome variables. Follow-up analyses suggested that specific intuitive eating subscales accounted for unique variance in the relation between intuitive eating and disordered eating. Intuitive eating was the only construct that was significantly associated with meal consumption. CONCLUSIONS: Intuitive eating and restraint appear to be only weakly correlated, and each is differentially associated with meal consumption. Mindful eating does not appear to relate to outcome variables.

Health, happiness and eating together: what can a large Thai cohort study tell us?

Our research investigates the significance of frequent solo consumption of main meals and the association with a holistic wellbeing measure of happiness using data from 39820 Thai Cohort Study members who completed 8-year follow-up in 2013. This nationwide cohort has been under study since 2005 to analyse the dynamics and determinants of the health-risk transition from infectious to chronic diseases. Here we analyse data from the 2009 and 2013 follow-ups. Approximately 11% reported eating more than half of the main meals per week alone. Sociodemographic attributes associated with eating alone were being male, older age, unmarried, smaller household, lower income, and urban residence. Dissatisfaction with amount of spare time (ie 'busyness') was also linked to eating alone. In the multivariate cross-sectional model, reporting being unhappy was associated with frequent solo eating (Adjusted Odds Ratio - AOR 1.54, 95% Confidence Intervals 1.30-1.83). Stratified by age and sex groups, the effects were strongest among females (AOR 1.90 1.52-2.38).  A monotonic relationship linked frequent eating alone and 4-year longitudinal unhappiness. The larger the dose of unhappiness the greater the odds of eating alone - AOR 1.29, 1.31, 1.72 after controlling for potential covariates. Having a meal is not only important for nutritional and health outcomes; it is also a vital part of daily social interaction. Our study provided empirical evidence from a non-Western setting that sharing meals could contribute to increasing happiness.

Brain dynamics of meal size selection in humans.

Although neuroimaging research has evidenced specific responses to visual food stimuli based on their nutritional quality (e.g., energy density, fat content), brain processes underlying portion size selection remain largely unexplored. We identified spatio-temporal brain dynamics in response to meal images varying in portion size during a task of ideal portion selection for prospective lunch intake and expected satiety. Brain responses to meal portions judged by the participants as 'too small', 'ideal' and 'too big' were measured by means of electro-encephalographic (EEG) recordings in 21 normal-weight women. During an early stage of meal viewing (105-145 ms), data showed an incremental increase of the head-surface global electric field strength (quantified via global field power; GFP) as portion judgments ranged from 'too small' to 'too big'. Estimations of neural source activity revealed that brain regions underlying this effect were located in the insula, middle frontal gyrus and middle temporal gyrus, and are similar to those reported in previous studies investigating responses to changes in food nutritional content. In contrast, during a later stage (230-270 ms), GFP was maximal for the 'ideal' relative to the 'non-ideal' portion sizes. Greater neural source activity to 'ideal' vs. 'non-ideal' portion sizes was observed in the inferior parietal lobule, superior temporal gyrus and mid-posterior cingulate gyrus. Collectively, our results provide evidence that several brain regions involved in attention and adaptive behavior track 'ideal' meal portion sizes as early as 230 ms during visual encounter. That is, responses do not show an increase paralleling the amount of food viewed (and, in extension, the amount of reward), but are shaped by regulatory mechanisms.

Effect of combined naltrexone and bupropion therapy on the brain's reactivity to food cues.

OBJECTIVE: The significant weight loss observed with combination naltrexone-sustained release (SR) 32 mg and bupropion SR 360 mg (NB32) therapy is thought to be due, in part, to bupropion stimulation of hypothalamic pro-opiomelanocortin (POMC) neurons, and naltrexone blockade of opioid receptor-mediated POMC autoinhibition, but the neurobiological mechanisms are not fully understood. We assessed changes in brain reactivity to food cues before and after NB32 treatment. METHODS: Forty women (31.1±8.1 years; body mass index: 32.5±3.9) received 4 weeks of NB32 or placebo, and were instructed to maintain their dietary and exercise habits. Functional magnetic resonance imaging responses (analyzed using SPM2 and clusters (>100 pixels)) to a 5-min food video (preparation of the subject's favorite food) and a 5-min neutral video (manipulation of neutral objects) under conditions of mild food deprivation (∼14 h) were assessed before and after treatment. RESULTS: The food cues video induced positive brain activation in visual and prefrontal cortices, insula and subcortical brain regions. The group-by-treatment interaction on regional brain activation was significant and showed that whereas NB32 attenuated the activation in the hypothalamus in response to food cues (P<0.01), it enhanced activation in regions involved in inhibitory control (anterior cingulate), internal awareness (superior frontal, insula, superior parietal) and memory (hippocampal) regions (whole-brain analysis; P<0.05). CONCLUSIONS: Blunting the hypothalamic reactivity to food cues while enhancing the activation of regions involved with self-control and internal awareness by NB32 might underlie its therapeutic benefits in obesity.

Meal provision in a UK National Spinal Injury Centre: a qualitative audit of service users and stakeholders.

STUDY DESIGN: A single centre survey. OBJECTIVES: The objective of this study is to (1) assess patients' food intake and (2) measure satisfaction with current food provision, as judged by patients and by stakeholders (medical and nursing staff, managers and catering staff). METHODS: Standardised questionnaires were used to record food intake over a 24-h period, and to evaluate the quality, ordering, delivery and overall acceptability of food provided. RESULTS: The food intake of 67 patients with spinal cord injury (SCI) was recorded (64% response rate) and 166 evaluations (50% response rate) were returned. Twenty-nine patients (48%) consumed three full meals a day, 17 (26%) received oral nutritional supplements, 22 (34%) received vitamin/mineral supplements, and 23 (35%) required assistance to eat. Some patients and stakeholders expressed satisfaction with the current food provision: taste good: 25 versus 17% (for patients and stakeholders, respectively); appropriate texture: 22 versus 21%; appropriate temperature: 55 versus 72% (P = 0.002); well presented: 43 versus 28%; good choice: 49 versus 59%; received meal ordered: 65 versus 37% (P < 0.001); meal served on time: 71 versus 58%; and no interruption during mealtimes: 62 versus 46%. Principal component analyses of item scores identified three main factors (food quality, food presentation and food delivery (logistics). CONCLUSION: The present study identified some areas where there appeared to have been improvement in SCI hospital catering, but with much still to be achieved. Hospital-catering systems should be tailored to meet the demands of the different patient groups to optimise nutritional intake. Periodic quality control is essential to meet recommendations and patients' expectations.