Combined effects of eating alone and living alone on unhealthy dietary behaviors, obesity and underweight in older Japanese adults: Results of the JAGES

The Association of Oral Processing Factors and Nutrient Intake in Community-Dwelling Older Adults: A Systematic Review and Meta-Analysis

CONTEXT

Oral health and food oral-processing issues emerge with functional decline in the older adult population, potentially increasing the risk of malnutrition. Impairment of oral health is associated with poorer nutrition status; however, the relationship between oral factors and the intake of each nutrient remains poorly understood.

OBJECTIVE

The associations between different oral factors and nutrient intakes among community-dwelling older adults were investigated.

DATA SOURCES

A literature search from 5 databases (Web of Science, Scopus, Cochrane Library, Ovid [MEDLINE and Embase], and CINAHL) was completed on February 1, 2022. The search was limited to peer-reviewed articles published between the years 2012 and 2022.

DATA EXTRACTION

Six cross-sectional studies were included in the meta-analysis. Two authors independently completed the data extraction and summarized the study characteristics, factors adjusted for in the statistical analysis, the outcome, and summary statistics of the results.

DATA ANALYSIS

Meta-analyses showed evidence of a significant association between compromised oral factors (namely, denture status, chewing ability, and the number of teeth) with lower energy (weighted mean difference [WMD], -107 kcal d-1 (95% CI, -132 to -81), protein (WMD, -5.2 g d-1; 95% CI, -6.6 to -3.8), fat (WMD, -4.6 g d-1; 95% CI, -6.7 to -2.6), carbohydrate (WMD, -8.8 g d-1; 95% CI, -13.9 to -3.7), and vitamin C intakes (WMD, -12.9 mg d-1; 95% CI, -16.6 to -9.2) in older adults.

CONCLUSION

Oral health can be an indicator of compromised daily energy, protein, fat, carbohydrate, and vitamin C intakes in older adults. However, the small sample size of the studies included in this review and the heterogeneity among macronutrient studies should be considered. Because of the lack of studies covering all aspects of food oral processing (eg, salivary flow rate, tongue pressure), the associations between oral processing and nutrient intake were not thoroughly explored.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO registration no. CRD42022308823.

Effect of eating alone and depression symptoms on incident disability among community-dwelling older adults

OBJECTIVES

The intent of the present study was to elucidate the association of eating alone and depressive symptoms with the development of disability among community-dwelling older adults, using a longitudinal study.

METHOD

Participants included 4648 Japanese older adults (mean age 73.8 ± 5.4 years; 44.3% men) aged ≥ 65 years at the time of the examination. Eating status was divided into two categories: "Eating with others at least once a day" and "Other." The 15-item Geriatric Depression Scale was used to measure depressive symptoms. Incident disability was certified by long-term care insurance (median duration: 36 months).

RESULTS

During a median follow-up at 36 months, 8.0% of the participants developed an incident disability. Adjusted for covariates, the participants who ate alone were associated with a higher hazard ratio of incident disability compared to those who ate with others (hazard ratio: 1.36, 95% confidence interval: 1.05-1.75). However, adjusted for the covariate depressive symptoms, eating alone was not significantly associated with incident disability. Structural equation models revealed that the indirect model confirmed eating alone habits were associated with disability via depressive symptoms.

CONCLUSIONS

This study confirmed that eating alone was associated with an incident disability after adjusting for the covariates. Furthermore, the present study suggests an indirect relationship between eating alone and incident disability via depressive symptoms, the result of the structural equation model.

The Association of Dining Companionship with Energy and Nutrient Intake Among Community-Dwelling Japanese Older Adults

BACKGROUND

Community-dwelling older adults are at risk of malnutrition due to age-related declines in energy and nutrient intake. While the positive effect of dining companions on energy and nutrient intake has been suggested, evidence remains inconclusive. This study investigated the association between the number of dining companions and energy and nutrient intake, as well as the contribution of specific food groups to higher intake in the presence of dining companions.

METHODS

This cross-sectional study included 2865 community-dwelling older adults. The number of dining companions was assessed through self-administered questionnaires and categorized into three groups (none, 1, ≥2). Dietary intake was evaluated using a validated food frequency questionnaire, and multivariable regression analyses were conducted to control for potential confounders.

RESULTS

Participants dining with two or more companions consumed significantly more energy (β 143.85; 95% CI: 30.05, 257.65; p for trend = 0.01), protein (β 6.32; 95% CI: 1.05, 11.59), fat (β 6.78; 95% CI: 2.44, 11.12; p for trend = 0.002), and carbohydrates (β 17.43; 95% CI: 1.48, 33.37; p for trend = 0.06) compared to those dining alone. They also consumed higher amounts of rice, fats and oils, meat, other vegetables, fruits, and mushrooms.

CONCLUSIONS

Dining with two or more companions is associated with greater energy and nutrient intake, particularly from energy- and nutrient-dense foods. Encouraging shared meals could serve as a potential approach to support dietary quality and address risks of malnutrition in older adults.

A comparative retrospective longitudinal study of arthritis risk and cognitive decline in older adults

Arthritis often results in unmet healthcare needs for older adults with cognitive decline, who may struggle to communicate pain or recall symptoms. However, the risk factors for arthritis in this group remain underexplored. We addressed this gap by identifying and comparing arthritis risk factors among older adults with varying cognitive statuses. Data from 334 participants with cognitive decline and 808 participants with normal cognition were analysed using the Korean Longitudinal Study of Aging, tracking arthritis diagnoses over 12 years with Kaplan-Meier curves and Cox proportional hazards regression. Results showed 47.6% of older adults with cognitive decline developed arthritis, compared with 30.1% with normal cognition. Key risk factors for the cognitive decline group included depressive symptoms (hazard ratio [HR]: 1.87), living alone (HR: 1.66), infrequent social interactions (HR: 1.42), and greater dependency in daily activities (HR: 1.41). In the normal cognition group, additional chronic illnesses (HR: 1.41) and higher body mass index (HR: 1.09) were significant risk factors. Understanding these distinct risk factors is crucial for preventing and managing arthritis among at risk groups. Moreover, these findings can assist in developing comprehensive public health strategies integrating mental health and social support to improve health outcomes for older adults with cognitive decline.

Comparison of Dietary Behaviors and Health-Related Quality of Life of the Elderly Based on Their Household Type in Korea

This study analyzed the raw data from the 2021 National Health and Nutrition Survey conducted annually in Korea to investigate the dietary behavior, nutrient intake, and health-related quality of life of the elderly in the community based on their household type: single-person, couple, or non-couple family household. As a result of the study, based on the household type, significant differences were found in the frequency of breakfast, lunch, and dinner, as well as in the frequency of consuming vegetables and fruits (P<0.05, P<0.01, P<0.001). After analyzing the impact of household type on the depression and happiness levels of the surveyed elderly, it was found that the depression levels of elderly individuals in single-person households were significantly 1.279 times higher, while their feelings of happiness were 0.561 times lower compared to elderly individuals living with their family, including a spouse (P<0.05, P<0.001). In order to enhance the health-related quality of life for elderly individuals living alone with low income and education levels, it is essential to provide systematic management and support activities.

Single-Person Households: Insights from a Household Survey of Fruit and Vegetable Purchases

Despite the efforts made to promote consumption, some countries are not increasing their fruit and vegetable intake, while household structures are undergoing relevant changes. Fruit and vegetable consumption is necessary but not sufficient for a healthy diet. Previous research has linked adequate fruit and vegetable consumption to a lower risk of cardiovascular diseases, type 2 diabetes, and some mental health conditions. Furthermore, millions of deaths are reported annually worldwide due to diets low in fruit and vegetables, highlighting their critical public health importance. This study aims to separately analyze the purchases of fruit and vegetables in single-person households. We used three waves of the Family Budget Survey, Encuesta de Presupuestos Familiares, in Chile, which is nationally representative of urban areas and includes over 10,000 households in each wave. We employed descriptive statistics to examine the characteristics of the head of household and the food shopper as well as the structure, composition, and overall characteristics of households. Additionally, we performed separate analyses for fruit and vegetable purchases, using these variables to determine the marginal effect on the probability of purchasing fruit or vegetables through probit models. Results show that, from 2011-2012 to 2021-2022, the share of households not purchasing fruit and vegetables increased from 5.0% to 8.4% and that, in single-person households, it rose from 11.2% to 19.1%. Male-headed, single-person households with low education and income were more likely not to purchase fruit, and these households also have decreasing vegetable purchases. Additionally, household income significantly impacts fruit purchases but does not significantly affect vegetable purchases. Our findings highlight the importance of considering single-person households as a target population segment for future public policies to promote fruit and vegetable consumption.

The impact of eating alone on food intake and everyday eating routines: A cross-sectional study of community-living 70- to 75-year-olds in Sweden

BACKGROUND

Eating is fundamental not only to survival and health, but also to how humans organise their social lives. Eating together with others is often seen as the healthy ideal, while eating alone is highlighted as a risk factor for negative health outcomes, especially among older adults. This paper, therefore, investigates the relationship between the frequency and subjective experience of eating alone and food-related outcomes among 70- to 75-year-olds in Sweden.

METHODS

A survey was distributed to a nationally representative random sample of 1500 community-living in Sweden, aged 70-75 years. Two different constructs of eating alone (objective and subjective) were measured, along with the following food-related outcomes: a food index, intake of food groups, consumption of ready-made meals, number of main meals per day, and body mass index (BMI).

RESULTS

In total, 695 respondents were included in the final sample. A quarter of the respondents were categorised as eating alone, of which a small proportion reported that doing so bothered them. There were no associations between eating alone and food index scores, BMI, or intake frequencies of fruits and berries, or fish and shellfish. However, people eating alone were less likely to report eating three meals per day (OR: 0.53, CI: 0.37-0.76, p = 0.006), less likely to report higher intake frequencies of vegetables and snacks, sugary foods, and sweet drinks (adjusted OR: 0.68, CI: 0.48-0.95, p = 0.023 resp. OR: 0.59, CI: 0.43-0.81, p = 0.001), and more likely to report higher intake frequencies of ready-made meals (adjusted OR: 3.71, CI: 2.02-6.84, p < 0.001) compared to those eating together with others. The subjective experience of eating alone did not have an impact on food-related outcomes.

CONCLUSION

Eating alone or with others played a role in participants' food intake, and seemed to influence aspects of the organisation of everyday eating routines rather than overall dietary healthiness or weight status. Our findings add to the previous body of research on commensality, eating alone, and health among the older population, providing insights into the development of future health policies and research.

Within- and between-person associations of time-varying determinants with snacking in older adults: an ecological momentary assessment study

Promoting healthy snacking is important in addressing malnutrition, overweight and obesity among an ageing population. However, little is known about the factors underlying snacking behaviour in older adults. The present study aimed to explore within- and between-person associations between determinants (i.e. intention, visibility of snacks, social modelling and emotions) and snacking behaviours (i.e. decision to snack, health factor of the snack and portion size) in older adults (60+). Conducting a two-part intensive longitudinal design, data were analysed from forty-eight healthy older adults consisting of (1) an event-based self-report ecological momentary assessment (EMA) diary every time they had a snack and (2) a time-based EMA questionnaire on their phone five times per day. Analysis through generalised linear mixed models indicated that higher intention to snack healthily leads to healthier snacking while higher levels of social modelling and cheerfulness promote unhealthier choices within individuals. At the between-person level, similar results were found for intention and social modelling. Visibility of a snack increased portion size at both a within- and between-person level, while the intention to eat a healthy snack only increased portion size at the between-person level. No associations were found between the decision to snack and all determinants. This is the first study to investigate both within- and between-person associations between time-varying determinants and snacking in older adults. Such information holds the potential for incorporation into just-in-time adaptive interventions, allowing for personalised tailoring, more effective promotion of healthier snacking behaviours and thus pursuing the challenge of healthy ageing.

Malnutrition and its associated factors among community-dwelling older men living alone

BACKGROUND/OBJECTIVES

Older men who live alone are more vulnerable to poor nutrition. However, little attention has been paid to malnutrition among this population. This study aimed to examine malnutrition and its associated factors among community-dwelling older men living alone.

SUBJECTS/METHODS

This cross-sectional descriptive study used cohort data of community-dwelling older adults living alone in South Korea. A total of 230 older men aged 65 and over were included in this study. Nutritional status was assessed using the Mini Nutritional Assessment-Short Form. Multidimensional factors (sociodemographic, health-related, psychosocial, and lifestyle characteristics) were evaluated. Hierarchical logistic regression analyses were conducted to identify the malnutrition-related factors.

RESULTS

The prevalence of malnutrition was 32.2% in older men living alone. Low income (odds ratio [OR], 2.44; 95% confidence interval [CI], 1.01-5.90), polypharmacy (OR, 2.23; 95% CI, 1.16-4.28), suicidal ideation (OR, 2.13; 95% CI, 1.02-4.45), meal skipping (OR, 3.26; 95% CI, 1.60-6.64), and smoking (OR, 2.86; 95% CI, 1.43-5.73) were significantly associated with malnutrition.

CONCLUSION

Malnutrition is a severe health problem in older men living alone. This study highlights the importance of comprehensive and tailored interventions to mitigate malnutrition among older men living alone.

Social disconnection and suicide mortality among Japanese older adults: A seven-year follow-up study

BACKGROUND

Few prospective studies have examined the association between social disconnection and late-life suicide. Therefore, we conducted a large-scale prospective study of older adults in Japan to examine differences in suicide mortality according to specific aspects of social disconnectedness.

METHODS

We conducted a nationwide baseline survey of functionally independent older adults (age ≥65 years) from 12 municipalities in Japan from 2010 to 2011. We followed the participants (n = 46,144) for cause of death through December 2017 using vital statistics. Social disconnection was assessed based on the indicators of eating alone, a lack of instrumental/emotional support, no participation in community activities, and no contact with friends. We adopted Cox regression models with multiple imputation for missing values and calculated the population-attributable fraction (PAF).

RESULTS

A total of 55 suicide deaths were recorded during an average follow-up of 7 years. Older adults with social disconnection had a marginally increased risk of suicide. The hazard ratio for eating alone vs. eating together was 2.81 (95% confidence interval [CI]: 1.47-5.37). The direction of these associations and point estimations did not largely change after controlling for depressive symptoms, an evident risk factor for suicidal behavior. The PAF indicated that eating alone was attributable to around 1800 (29%) of the suicide deaths among older adults annually in Japan.

CONCLUSION

Avoidance of not only depressive symptoms, but also social disconnection including eating alone, is useful in suicide prevention among older adults.

Exercise Promotion System for Single Households Based on Agent-Oriented IoT Architecture

People living alone encounter well-being challenges due to unnoticed personal situations. Thus, it is essential to monitor their activities and encourage them to adopt healthy lifestyle habits without imposing a mental burden, aiming to enhance their overall well-being. To realize such a support system, its components should be simple and loosely coupled to handle various internet of things (IoT)-based smart home applications. In this study, we propose an exercise promotion system for individuals living alone to encourage them to adopt good lifestyle habits. The system comprises autonomous IoT devices as agents and is realized using an agent-oriented IoT architecture. It estimates user activity via sensors and offers exercise advice based on recognized conditions, surroundings, and preferences. The proposed system accepts user feedback to improve status estimation accuracy and offers better advice. The proposed system was evaluated from three perspectives through experiments with subjects. Initially, we demonstrated the system's operation through agent cooperation. Then, we showed it adapts to user preferences within two weeks. Third, the users expressed satisfaction with the detection accuracy regarding their stay-at-home status and the relevance of the advice provided. They were also motivated to engage in exercise based on a subjective evaluation, as indicated by preliminary results.

Social isolation and depression as risk factors for weight loss of 5kg or more among older Korean adults

Given a well-known overlapping prevalence of social isolation with loneliness and depression among older adults, this study aimed to contextually investigate the relationship of these constructs with weight loss of more than 5kg in a year, with a special focus on the intersection of living alone and marital dissolution as key dimensions of isolation. The data were obtained from the Korean Longitudinal Study of Aging (KLoSA) from 2006, 2008, 2010, 2012, 2014, 2016, and 2018, with an adult sample of those aged 65 and older (n = 5,481). The study evaluated several critical dimensions of social isolation: living alone, transition to living alone, infrequent social contact with children or friends, and infrequent social participation. These dimensions were examined individually and as a composite scale, along with loneliness and depressive symptoms, to determine their association with weight loss of 5kg or greater among older men and women. Generalized Estimating Equation (GEE) regression models enabled investigation of whether socially isolated men and women tended to lose 5kg or more in weight, given other confounding factors. Surprisingly, the results showed no evidence of such a trend. However, significant associations were found between weight loss and changes in living alone and marital status. For older men, transitioning to living alone without a change in marital status was linked to significant weight loss. For older women, transitioning to living alone following widowhood or divorce was the risk factor. These relationships remained significant even after adjusting for depression and a wide range of covariates. Additional analysis testing a cumulative effect revealed that only depression was a risk factor for being underweight at the last observation. Therefore, to prevent a clinically risky extent of weight loss, health policies for older Koreans should focus on those who transition to living alone, especially due to spousal bereavement or divorce (among women) and separation from living with children (among men).

Relationship between Eating Alone and Handgrip Strength in Korean Older Adults

Sarcopenia is defined as an age-related decline in muscle mass, muscle strength, and physical performance. Eating alone has been linked to various health issues in older adults. This study investigated the relationship between eating alone and handgrip strength (HGS) in older adults using data from 7278 individuals (≥65 years) who participated in the 2014-2019 Korea National Health and Nutrition Examination Survey. HGS was measured using a digital grip strength dynamometer, relative HGS was calculated by dividing HGS by body mass index, and dynapenia was defined as an HGS < 28 kg for men and <18 kg for women. Multivariable logistic regression analysis showed that women who ate two meals alone were more likely to exhibit dynapenia than those who never ate alone (odds ratio [OR], 1.3; 95% confidence interval [CI], 1.03-1.77). If the groups that never ate alone or ate one meal alone were combined as the reference group, the probability of dynapenia was higher in the combined groups that ate two or three meals alone (OR, 1.25; 95% CI, 1.04-1.50). No association was observed between eating alone and dynapenia in men. This suggests that eating alone is a modifiable related factor of dynapenia in older women.

Prevalence of body mass index categories among adults living alone in China: Observational study

BACKGROUND

Adults living alone represent a growing population group in China. Understanding the prevalence of body mass index (BMI) categories and their associations with demographic and lifestyle factors among this group is essential for informing targeted interventions and public health policies.

METHODS

In this population-based cross-sectional study, we used individual-level data from the 2011-2021 China General Social Survey. Main outcomes were prevalence of BMI categories adjusted for gender and age, using logistic regression and model-predicted marginal prevalence to estimate BMI categories prevalence.

RESULTS

We analyzed 9,077 single-living Chinese adult participants. The primary-adjusted prevalence of BMI categories varied across different genders and age groups. Underweight was more prevalent in females (12.73%; 95% CI: 12.31% - 13.14%) than in males (7.54%; 95% CI: 7.19% - 7.88%), while overweight and obesity were higher in males. Primary-adjusted underweight prevalence was highest among the 18-24 years age group (22.09%; 95% CI: 20.17% - 24.01%) and decreased with age. Primary-adjusted overweight prevalence increased with age, peaking in the 45-54 years age group (41.94%; 95% CI: 40.96% - 42.93%). Primary-adjusted obesity prevalence exhibited a fluctuating pattern across age groups, with the highest prevalence observed in the 45-54 years age group (9.81%; 95% CI: 9.19% - 10.44%).

CONCLUSION

Our findings reveal significant associations between BMI categories and demographic and lifestyle factors among adults living alone in China. These results can inform targeted interventions and public health policies aimed at promoting healthy weight management and addressing the unique health challenges faced by single-living individuals in China.

Different Dimensions of the Home Food Environment May Be Associated with the Body Mass Index of Older Adults: A Cross-Sectional Survey Conducted in Beijing, China

OBJECTIVE

The objective of this study was to evaluate the home food environment of the elderly in Beijing and analyze its association with the body mass index (BMI) of the elderly, as well as to provide recommendations for improving the home food environment for the elderly.

METHODS

This study was conducted in Beijing, China, in 2019. The participants were 1764 elderly individuals aged 65 to 80, recruited from 12 communities through a multistage stratified random sampling method. The study involved the use of questionnaire surveys to gather data on participants' demographics, the availability of various foods in their households, and their living conditions. Socioeconomic status (SES) was evaluated based on their educational level, occupation, and income level. Height and weight measurements were taken to calculate BMI. We conducted both univariate analysis and multiple linear regression analysis to evaluate the relationship between the home food environment and BMI.

RESULTS

A total of 1800 questionnaires were distributed, of which 1775 were retrieved, resulting in a questionnaire recovery rate of 98.6%. Among these, 1764 questionnaires were deemed valid, corresponding to a questionnaire validity rate of 99.4%. The participants had a mean age of 69.7 ± 4.3 years old, over 40% of whom were overweight or obese. In terms of low-energy/high-nutrient-density foods, the most readily available items were fresh vegetables (95.6%), followed by coarse grains (94.1%), fresh fruits (90.4%), and dairy products (83.6%). Among high-energy/low-nutrient-density foods, preserved foods were the most available (51.9%), followed by salted snacks (40.6%), sugary beverages (28.2%), and fried foods (9.4%). Approximately 7.3% of participants lived alone. Elderly individuals with higher SES had a lower BMI compared to those with medium to low SES (25.9 vs. 26.5, 25.9 vs. 26.4, p < 0.05). Those living alone had a higher BMI than those who did not (27.2 vs. 26.2, p = 0.001). After controlling for potential confounding variables, older adults with high SES exhibited a BMI reduction of 0.356 kg/m2 (p = 0.001), whereas those living alone exhibited an increase in BMI of 1.155 kg/m2 (p < 0.001). The presence of preserved foods at home was linked to a BMI increase of 0.442 kg/m2 (p = 0.008).

CONCLUSION

This study underscores the significant impact of family SES, living conditions, and the availability of preserved foods on the BMI of elderly individuals.

Changes in life satisfaction among middle-aged adults living alone over a 12-year span

This secondary analysis used data collected for the Korean Longitudinal Study of Aging from 2006 to 2018 to examine changes in life satisfaction among middle-aged adults living alone in South Korea. Individuals who were over 45 years of age, lived alone at the time of the first data collection wave, and responded at least twice to the survey over the 12-year study period were included in the final linear mixed model (N = 124). Life satisfaction increased for those who had increased assets, were widowed, and had more frequent contact with acquaintances (i.e., once a month and once a week compared with once a year). Life satisfaction decreased as the number of chronic illnesses increased for underweight individuals compared with normal weight or overweight individuals and for depressed versus non-depressed individuals. This study's findings indicate that increased social support is beneficial for middle-aged marginalized individuals, including those who are economically disadvantaged, have few social interactions, are underweight, and have chronic illnesses.

Does eating with others promote happiness among older adults living alone? A 3-year longitudinal study of the Japan gerontological evaluation study

OBJECTIVE

Living a happy life is an essential issue for old adults. However, how eating with others contributes to happiness and whether this association is different by living arrangements or not is unknown. The current study examined the relationship between the frequency of eating with others and happiness among older adults according to their living arrangements using 3-year longitudinal data.

METHODS

The analyzed sample comprised 18,727 people (10,920 males and 7807 females) with low happiness (0-7 points on score of 0-10 points) from Japan Gerontological Evaluation Study (JAGES) in 2016. Our exposure was the frequency of eating with others: rarely, a few times a year, a few times a month, and a few times a week or more. We performed Modified Poisson Regression to examine the association between the frequency of eating with others and high happiness (8-10 points) in 2019 stratified by living arrangement (living alone/with others).

RESULTS

A total of 4352 (23.2%) people showed high happiness in 2019. After adjusting for age, sex, marital status, education, household income, social participation, illnesses under treatment, and depressive symptoms in 2016, the cumulative incidence ratio (CIR) for high happiness in 2019 among people living alone was more significant, that is, 1.28 (95% confidence intervals: 0.88-1.87), 1.50 (1.05-2.14), and 1.82 (1.26-2.63), than 1.28 (1.11-1.48), 1.30 (1.12-1.50), and 1.33 (1.16-1.52) among people living with others for those who ate with others a few times a year, a few times a month, and a few times a week or more compared to those who rarely ate with others, respectively. The interaction between the frequency of eating with others and living arrangements was statistically significant. The trend test showed that higher frequency of eating with others was significantly associated with high happiness.

CONCLUSIONS

Eating with others was associated with improved happiness among older adults, with such an association being stronger among people living alone.

BMI categories across different living arrangements

INTRODUCTION

Research on the prevalence of body mass index (BMI) categories across different living arrangements remains limited. We aimed to quantify the prevalence of BMI categories among those living alone (LA) and those not living alone (NLA).

METHODS

In this population-based cross-sectional study, we used individual-level data from the 2011-2021 Behavioral Risk Factor Surveillance System. Main outcomes were prevalence of BMI categories in LA and NLA, adjusted for age, gender, and race/ethnicity, and socioeconomic status, using logistic regression and model-predicted marginal prevalence to estimate BMI categories prevalence.

RESULTS

Between 2011 and 2021, we quantified BMI categories prevalence in 4,195,414 adults in the BRFSS, with 1,197,787 (28.5%) adults LA and 2,997,627 (71.5%) adults NLA. In comparison to NLA, LA consistently demonstrates lower adjusted obesity prevalence across genders and age groups, with the highest prevalence observed in the 45-64 age range, particularly within the 45-54 group (LA: 37.4%, 95% CI: 37.1-37.8%; NLA: 34.3%, 95% CI: 33.8-34.7%). Additionally, LA displays an overall lower adjusted prevalence of overweight compared to NLA, notably in the 18-34 and >64 age groups.

CONCLUSIONS

Heterogeneity in BMI categories prevalence exists between LA and NLA. Future studies and public health efforts should consider this heterogeneity.

Association between Living Conditions and the Risk Factors, Etiology, and Outcome of Ischemic Stroke in Young Adults

Objective In recent decades, living conditions have changed drastically. However, there are few data regarding the interaction between living conditions and the risk of ischemic stroke (IS) in young adults. The present study explored the association between living conditions or marital status and the risk factors, etiology, and outcome of IS in young adults. Methods We prospectively enrolled patients with incident IS who were 20-49 years old from 37 clinical stroke centers. We collected the demographic data, living conditions, marital status, vascular risk factors, disease etiology, treatment, and outcomes at discharge. A comparison group was established using the official statistics of Japan. We categorized patients into the two groups based on living conditions: solitary group and cohabiting group. Clinical characteristics were then compared between living conditions. Results In total, 303 patients were enrolled (224 men; median age at the onset: 44 years old). Significant factors associated with the incidence of IS were as follows: solitary status, body mass index >30 kg/m2, current smoking, heavy alcohol consumption, hypertension, diabetes mellitus, and dyslipidemia. Furthermore, in the solitary group, the proportions of men, unmarried individuals, and current smokers were significantly higher than in the cohabiting group. In addition, poor outcomes (modified Rankin Scale ≥4) of IS were more common in the solitary group than in the cohabiting group. Conclusion Our study showed that not only conventional vascular risk factors but also living conditions, especially living alone while unmarried, were independent risk factors for IS in young adults.

Associations between cooking self-efficacy, attitude, and behaviors among people living alone: A cross-sectional survey analysis

Cooking-related literacy and attitudes may play important roles in preventing and reducing diet-related chronic diseases and nutrition disparities. People living alone are an under-researched but growing population who face above average food insecurity rates. This study's objectives were to 1) test how cooking self-efficacy and attitude are stratified demographically among a sample of people living alone, focusing on variations across gender, age, and food security, and 2) examine how cooking self-efficacy and attitude are associated with two indicators of cooking behavior - cooking frequency and convenience orientation. We draw from a cross-sectional survey analysis of 493 adults living alone in Illinois, USA with validated measures for cooking self-efficacy, attitude, frequency, convenience orientation, and demographic characteristics. Hierarchical linear regression models were used to examine demographic factors explaining variation in self-efficacy and attitude, with attention to interactions between gender, food insecurity, and age. Poisson and OLS linear regression models were used to examine associations between self-efficacy and attitude and cooking frequency and convenience orientation. We find cooking-related self-efficacy and attitude showed strong but distinct associations with cooking frequency and convenience orientation. Overall, food insecure groups had lower self-efficacy than those who were food secure; however, food insecure women had higher self-efficacy than men in similar positions, apart from older-adult women who held particularly low efficacy. Cooking attitudes varied in small ways, notably with food insecure younger and older women possessing more negative cooking attitudes than middle-aged women. This research highlights the importance of understanding the cooking-related orientations of single-living people, while demonstrating that this group's ability to prevent and manage food insecurity is not uniform. These results can inform targeted interventions around food and nutrition insecurity, cooking attitudes, and self-efficacy among single-living populations.

Three-Dimensional Printing of Foods: A Critical Review of the Present State in Healthcare Applications, and Potential Risks and Benefits

Three-dimensional printing is one of the most precise manufacturing technologies with a wide variety of applications. Three-dimensional food printing offers potential benefits for food production in terms of modifying texture, personalized nutrition, and adaptation to specific consumers' needs, among others. It could enable innovative and complex foods to be presented attractively, create uniquely textured foods tailored to patients with dysphagia, and support sustainability by reducing waste, utilizing by-products, and incorporating eco-friendly ingredients. Notable applications to date include, but are not limited to, printing novel shapes and complex geometries from candy, chocolate, or pasta, and bio-printed meats. The main challenges of 3D printing include nutritional quality and manufacturing issues. Currently, little research has explored the impact of 3D food printing on nutrient density, bioaccessibility/bioavailability, and the impact of matrix integrity loss on diet quality. The technology also faces challenges such as consumer acceptability, food safety and regulatory concerns. Possible adverse health effects due to overconsumption or the ultra-processed nature of 3D printed foods are major potential pitfalls. This review describes the state-of-the-art of 3D food printing technology from a nutritional perspective, highlighting potential applications and current limitations of this technology, and discusses the potential nutritional risks and benefits of 3D food printing.

Dietary behaviours and related lifestyles according to the presence or absence of skipping breakfast in Japanese adults: the JPHC-NEXT study

OBJECTIVE

To assess dietary behaviours and related lifestyles according to the presence or absence of skipping breakfast.

DESIGN

We analysed the cross-sectional data from a baseline survey of a large-scale population-based cohort study in Japan conducted in 2011-2016. Participants provided information on dietary behaviours and lifestyles through a self-administered questionnaire. Skipping breakfast was defined as not eating breakfast at least once a week and was classified according to the frequency of skipping breakfast as 1-2, 3-4 or ≥5 times/week.

SETTING

Sixteen municipalities in seven prefectural areas across Japan under the Japan Public Health Centre-based prospective study for the Next Generation.

PARTICIPANTS

112 785 residents (51 952 males and 60 833 females) aged 40-74 years.

RESULTS

After adjustment for age, socio-demographic status, drinking status and smoking status, individuals who skipped breakfast at least once a week, compared with those who ate breakfast every day, were more likely to have adverse dietary behaviours such as frequent eating out (multivariable OR = 2·08, 95 % CI (1·96, 2·21) in males and 2·15, 95 % CI (1·99, 2·33) in females), frequent eating instant foods (1·89, 95 % CI (1·77, 2·01) in males and 1·72, 95 % CI (1·56, 1·89) in females). They had late bedtime (1·85, 95 % CI (1·75, 1·95) in males and 1·98, 95 % CI (1·86, 2·11) in females) and living alone (2·37, 95 % CI (2·17, 2·58) in males and 2·02, 95 % CI (1·83, 2·21) in females), using the logistic regression model.

CONCLUSIONS

Both adult males and females who skipped breakfast were likely to eat out, to have a dietary habit of eating instant foods and have lifestyles such as late bedtime and living alone than those who ate breakfast.

Foods and Nutrients at Risk for Insufficient Intake by Community-Dwelling Healthy Older Women Eating Alone and Together in Japan-A Preliminary Finding

Eating alone and poor dental status have been reported to influence dietary intake in older adults. First, we compared nutrient and food intake and dental markers between women eating alone and together, who participated in a home health management program conducted by Kanazawa Medical University. The results showed the significantly higher intake of fresh fruit and some micro-nutrients and a lower decayed, missing, and filled teeth (DMFT) index (better dental status) in women eating alone after adjusting for age, suggesting that dental status may mediate the association between commensality and dietary intake. Then, we investigated nutrients and foods at risk for insufficient intake and associated with increasing dental markers. The risks for the insufficient intake of protein and n-3 and n-6 polyunsaturated fatty acids (PUFAs) were significantly increased with an increasing DMFT index. The risk for n-3 PUFA intake also increased with increasing numbers of missing teeth in women. Foods at risk for insufficient consumption included beans for women with an increasing DMFT index and green and yellow vegetables, fresh fruits, and meat and fish for women with increasing numbers of missing teeth. These findings suggest that good health management, including the treatment of decayed teeth, is important for the prevention of malnutrition in community-dwelling healthy older women.

Exploring Living Arrangements as a Predictor of Canadians' Illicit Drug Use: Quantitative Findings From the Canadian Community Health Survey

Objectives: About four percent of Canadians used illegal drugs in 2019, but it remains unknown whether their living arrangements are a relevant factor. Methods: We use the public version of the 2015-2016 Canadian Community Health Survey Annual Component. The binary logit model and complementary log-log model are applied to investigate to what extent living arrangements predict Canadians' recent illicit drug use. Results: Living alone is significantly associated with Canadians' illicit drug use. For young and older Canadians, those living with spouses/partners, children, or both are less likely to use illicit drugs than their solo-living counterparts. Middle-aged Canadians who lived with spouses/partners only or with children have significantly lower likelihoods of using illicit drugs compared to those living alone. Additionally, differences between men and women have been found. Spouses/partners and children play more positive roles for young and middle-aged women than for men. Conclusion: Our findings suggest that living with core families is a type of collectivity that may have positive effects on Canadians' health behaviours compared to those living alone, who, therefore, need more attention from health officials.

How Does the Frequency of Eating-Alone among Older People in Korea Affect Their Health and Dietary Behavior?

This study examined the relationship between general population characteristics and diet-related factors pertaining to eating alone for older adults (65 years and older) in Korea. This study used the Korea National Health and Nutrition Examination Survey (KNHANES), 2016-2020, and the target population was 7037 Koreans aged 65 years or older who participated in the nutritional survey and health interview. Eating alone variables were classified as follows. Eating together all day means "eating together", eating only one meal a day means "1/day", eating two meals a day alone means "2/day", and "3/day" means eating three meals a day alone. The main results are as follows. The rate of moderate or severe food insecurity was 3.41% in the "eating together" group to 7.86% in the "3/day" group, which was 4.45% higher in the "3/day" group. Fruit + vegetable intake among food intake lowered by about 35 g from 301.2 g in the "eating together" group to 266.2 g in the "3 day" group. In addition, as a result of analyzing the prevalence of depression using the PHQ-9 score, the "3/day" group had a 1.775 to 2.464 times higher risk of depression than the "eating together" group. Finally, EQ-5D variables and quality of life scores were significantly lowered from the "eating together" group to the "3/day" group. Overall, higher frequency of eating alone was associated with food safety, essential food intake, and quality of life. Based on these results, it is thought that a dietary life support program such as the eating together program is necessary to improve the quality of life of the older people who eat alone.

Perceptions and experiences of eating alone among community-living retired Swedes: Loss, routine and independence

The practice of eating together, commensality, is often considered as something positive in later life, particularly regarding peoples' nutritional status and psychosocial well-being. Eating alone, in contrast, is treated as a risk factor, although literature indicates that it is not necessarily something negative. Still, analyses that specifically target older peoples' varied experiences and notions of eating alone are scarce. This study has explored perceptions and experiences of eating alone among older people in Sweden, a country considered highly individualistic, yet with relatively low levels of loneliness in the older population. Semi-structured interviews were conducted with 20 community-living and retired Swedes, 70-90 years of age. A thematic analysis identified three themes: i) 'Eating alone as a manifestation of loss'; ii) 'Eating alone as an everyday routine'; and iii) 'Eating alone as independence and contentment'. General perceptions of eating alone were often related to the current living situation (e.g., cohabiting or single-living). One key finding was an identified tension between the idea of eating alone as something problematic among those living and eating with a partner and the practical experience of an uncomplicated routine among those living and eating alone. Eating together is discussed as a possible social need for many, but perhaps not for all. Some can feel content with eating alone or even enjoy it. Future studies should approach potential disadvantages of eating alone among older people as an open empirical question that is likely to depend on both the individual and the cultural context.

Associations of Cooking Skill with Social Relationships and Social Capital among Older Men and Women in Japan: Results from the JAGES

The health benefits of social relationships and social capital are well known. However, little research has examined the determinants of social relationships and social capital. We examined whether cooking skill was associated with social relationships and social capital in older Japanese people. We used 2016 Japan Gerontological Evaluation Study data on a population-based sample of men and women aged ≥ 65 years (n = 21,061). Cooking skill was assessed using a scale with good validity. Social relationships were evaluated by assessing neighborhood ties, frequency and number of meetings with friends, and frequent meals with friends. Individual-level social capital was evaluated by assessing civic participation, social cohesion, and reciprocity. Among women, high-level cooking skill was positively associated with all components of social relationships and social capital. Women with high-level cooking skill were 2.27 times (95% CI: 1.77-2.91) more likely to have high levels of neighborhood ties and 1.65 (95% CI: 1.20-2.27) times more likely to eat with friends, compared with those with middle/low-level cooking skill. Cooking skills explained 26.2% of the gender difference in social relationships. Improving cooking skills may be key to boosting social relationships and social capital, which would prevent social isolation.

Longitudinal association between eating alone and deterioration in frailty status: The Korean Frailty and Aging Cohort Study

BACKGROUND

Among risk factors of developing frailty, dietary factor played an important role as a potentially modifiable risk factor. Eating alone is associated with malnutrition, depression, and social isolation, which are risk factors of frailty. We evaluated the longitudinal association between a change to eating alone and deterioration in frailty status in a cohort of community-dwelling elderly persons.

METHODS

The study subjects were 2072 non-frail Korean elderly persons aged 70-84 years who were recruited for the Korean Frailty and Aging Cohort Study (KFACS). The subjects were divided into 4 groups based on changes in eating with others or alone between the baseline survey (2016-2017) and the follow-up survey (2018-2019): group I (ate with others consistently), group II (ate with others at baseline but ate alone at follow-up), group III (ate alone at baseline but ate with others at follow-up), group IV (ate alone consistently). We assessed physical frailty using the Cardiovascular Health Study (CHS) frailty phenotype. The association between changes in eating with others or alone and frailty progression was assessed by multiple logistic regression analysis after adjusting for covariates.

RESULTS

The mean age of the study subjects was 76.2 (SD: 3.8) years old and 50.8 % were female. At follow-up, 364 new cases (34.5 %) of pre-frailty (n = 348) and frailty (n = 16) were identified among those who were robust at baseline (n = 1056), while 88 new cases (8.7 %) of frailty were identified among those who were pre-frail at baseline (n = 1016). Compared to group I, group II showed an increased risk of deterioration in frailty status after adjustments with multivariables including social isolation and malnutrition (adjusted odds ratio [aOR] = 1.61, 95 % confidence interval [CI]: 1.03-2.50). However, the association disappeared after further adjustment for depression. When we examined the longitudinal association between changes in eating with others or alone and changes in each frailty domain, group II showed an increased risk for the weight loss (aOR = 3.07, 95 % CI: 1.39-6.76) compared to group I. Group IV showed an increased risk for the weight loss (aOR = 2.39, 95 % CI: 0.95-6.00) and weakness (aOR = 2.07, 95 % CI: 1.16-3.68).

CONCLUSIONS

A change from eating with others to eating alone was found to significantly increase the risk of deterioration in frailty status in elderly people, and the association seemed to be mediated by depression. These findings suggest that interventions to maintain eating partners and manage depression are needed to prevent frailty progression in elderly people.

The socioecological correlates of meal skipping in community-dwelling older adults: a systematic review

CONTEXT

Meal skipping may contribute to nutrient deficiency across the lifespan. Multiple socioecological factors have been identified as correlates of meal skipping in adolescents and adults, but evidence in older adults is limited.

OBJECTIVE

To determine the socioecological correlates of meal skipping in community-dwelling older adults.

DATA SOURCE

Embase, PsycINFO, CINAHL, and MEDLINE electronic databases were systematically searched from inception to March 2021.

DATA EXTRACTION

A total of 473 original research studies on socioecological factors and meal skipping among community-dwelling adults aged ≥65 years were identified. Title, abstract, and full-text review was performed by 2 reviewers independently, and a third reviewer resolved disagreements. A total of 23 studies met our inclusion criteria. Data were extracted by 1 reviewer from these studies and independently verified by another. The Newcastle-Ottawa Scale was used to assess methodological quality.

DATA ANALYSIS

The frequency of meal skipping in included studies ranged between 2.1% and 61%. This review identified 5 domains of socioecological correlates associated with meal skipping in older adults: sociodemographic, behavioral, biomedical, psychological, and social.

CONCLUSION

Understanding the factors associated with meal skipping in older adults can inform the development of targeted interventions to improve nutrition and health.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO registration no. CRD42021249338.

Effect of Dysphagia on the Older Adults' Nutritional Status and Meal Pattern

INTRODUCTION/OBJECTIVES

Dysphagia is a widespread clinical condition among older adults. Although known as a risk factor for nutritional status and dehydration, dysphagia also affects meal patterns. This study aimed to determine the relationship between dysphagia and undernutrition, as well as dietary consumption patterns in older adults.

METHODS

268 older adults (144 women, 124 men) were included in the study. Mini Nutritional Assessment (MNA), dysphagia assessment (EAT-10), oral examination, and Semi-quantitative Food Frequency Questionnaire (SFFQ) were used for collecting data. Odds ratio and Chi square were used to compare independent variables in subjects with and without undernutrition as well as those who intake texture modified and non-texture modified diet.

RESULTS

Mean age of the undernutrition and normal nutrition groups was 68.9 ± 6.1 and 68.8 ± 6.0 years, respectively. The undernutrition group's activities of daily living (ADL) were 19.7 ± 0.9, and the normal nutrition group was 19.8 ± 0.7. Older adults with dysphagia were 4.8 times more likely to experience undernutrition than older adults without dysphagia (95% CI = 1.75-13.13, P = .002). There was a statistically difference between the meal patterns among the dysphagic older adult group and the normal-swallowing older adults' group at the .05 level.

CONCLUSIONS

According to this study, dysphagia was associated with the nutritional status of older adults and dietary patterns. The study results suggested some recommendations for dental health personnel on oral care related to dietary consumption and dietary patterns in older adults.

Correlates of Meal Skipping in Community Dwelling Older Adults: A Cross-Sectional Study

In this cross-sectional analysis of 10,071 community dwelling adults aged ≥70 years, we examined factors associated with meal skipping (self-reported) using multivariable logistic regression. Prevalence of meal skipping in this study was 19.5%. The adjusted odds (aOR [95%CI]) of meal skipping were lower in those 85+ years (vs. 70-74.9 years, 0.56 [0.45-0.70]), and in those in regional areas (vs. urban area, 0.81 [0.72-0.92]). Higher odds of meal skipping were observed for those living alone (vs. living with someone, 1.84 [1.64-2.05]), current smokers (vs. non-smokers, 2.07 [1.54-2.80]), consumers of high amounts of alcohol (vs. abstainers 1.93 [1.35-2.75]), those with poor oral health (vs. excellent oral health, 1.71 [1.07 -2.73]) diabetes (vs. not 1.26 [1.06-1.50]), or frailty (vs. not, 1.63 [1.09-2.43]). This study identified socio-demographic, social, behavioural and biomedical correlates of meal skipping in later life, which may assist in targeting interventions to address meal skipping.

Dietary Problems Are Associated with Frailty Status in Older People with Fewer Teeth in Japan

This study aimed to investigate the association between dietary problems and frailty according to tooth loss in older Japanese people. This cross-sectional study included 160 older people (mean age 82.6 years) from Japan. Frailty status was assessed using the Study of Osteoporotic Fractures (SOF) criteria, which consists of (i) weight loss > 5% in the past year, (ii) inability to perform five chair stands, and (iii) self-perceived reduced energy level. Frailty was defined as the presence of ≥2 items of SOF criteria. Multivariate logistic regression analyses were performed with frailty as the dependent variable and dietary problems as the independent variable, stratified according to having <20 teeth. Low appetite and no enjoyment of eating were associated with frailty after adjusting for covariates in participants with <20 teeth. Dietary problems, including low appetite, eating alone, and negative attitudes toward enjoyment of eating were associated with a self-perceived reduced energy level in participants with <20 teeth. However, this association was not observed in participants with ≥20 teeth. In older people with fewer teeth, dietary problems have been suggested to be associated with frailty. Therefore, it may be necessary to pay attention to dietary problems, especially in older people with tooth loss.

Changes in bone mineral density in unconscious immobile stroke patients from the acute to chronic phases of brain diseases

Objectives

Decreased bone mineral density (BMD) is observed in immobile stroke patients. But it is not clarified yet how rapidly BMD reduction occurs or what the most influencing factor to BMD loss is.

Methods

BMDs in the lumbar vertebrae and the proximal femur of the paralyzed side were measured in 100 immobile stroke patients at 1 week (0 month), 1 month, and 2 months after admission. The levels of serum calcium, phosphorous, 25-hydroxyvitamin D, and urine cross-linked N-telopeptide of type I collagen (NTx) were also measured.

Results

The average age of patients was 75.0 ± 11.4 years (31–94 years). No BMD reduction was identified in the lumbar vertebrae in 2 months; however, BMD in the femur significantly decreased in 2 months in female patients (P < 0.05). Serum calcium and phosphorous levels remained within the normal range during hospitalization, and 25-hydroxyvitamin D value rose in 2 months. Urine NTx significantly increased in both males and females in 2 months (male: P < 0.05, female: P < 0.01).

Conclusions

While there was no significant change in lumbar spine BMD in the 2 month period of immobilization after stroke, BMD in the proximal femur showed a significant reduction, particularly in women. The differential loss of BMD in the 2 regions of interest could possibly be due to the physical forces acting on different body parts during mobilization and nutritional factors. More studies are needed with larger study samples and prolonged follow-up to check the accuracy of these observations.

Associations between physical frailty and living arrangements in Japanese older adults living in a rural remote island: The Shimane CoHRE study

Background

Living arrangements have been known to be associated with physical frailty. However, the prevalence of frailty and its risk factors in remote islands is not understood. We examined the association between living arrangements and objectively measured frailty among older adults living in a remote island of Japan.

Methods

Among older people living in Okinoshima, 656 older adults (75.6 ± 6.4 years) were analyzed. Physical frailty (robust, prefrailty, or frailty) was assessed using the 5-item frailty phenotype (unintentional weight loss, self-reported exhaustion, weakness, slow walking speed, and low physical activity). Physical functions (muscle mass, gait speed, and grip strength) were measured objectively.

Results

The prevalence of frailty and prefrailty was 6.6% and 43.8%, respectively. Living with a spouse resulted in a significantly lower prevalence of frailty (p < 0.001) compared with other living arrangements. All objectively measured physical functions among those who lived with a spouse were significantly superior to those who lived with family or alone (p < 0.001). Multinomial logistic regression showed that living alone was significantly associated with frailty (odds ratio [OR] 2.36, 95% confidence interval [CI] 1.07-5.24) and prefrailty (OR 1.75, 95% CI 1.14-2.69) after adjusting for all covariates.

Conclusion

The prevalence of frailty on remote islands seemed similar to that in urban areas. Older people living in remote islands might be able to maintain their physical health. Furthermore, living alone may correlate with increased risks of frailty and prefrailty. Among elderly individuals on remote islands, living with a spouse might be desirable to prevent (pre)frailty.

Meal Patterns of Older Adults: Results from the OUTDOOR ACTIVE Study

Eating habits have a substantial effect on health, not only because of consumed foods and nutrients, but also because of the regularity of meals. This study investigates meal patterns in older adults. Data from 1198 adults (52.8% female) aged between 65 and 75 years, who resided in Bremen, Germany, were included in this cross-sectional study. Using a self-administered questionnaire, daily meals were assessed and categorised into three meal pattern types: ‘regular eaters’ (eating at least three meals a day), ‘meal skippers’ (skipping one meal a day), and ‘irregular eaters’ (skipping more than one meal a day). Descriptive analyses were carried out, stratified by sex and meal pattern types. Most women and men were regular eaters (51.5% and 51.7%, respectively), 33.8% of women and 33.3% of men were meal skippers, and 14.7% of women and 15.0% of men were irregular eaters. Differences between meal patterns were seen with regard to socioeconomic status; self-rated health; body-mass index; hypertension; consumption of self-prepared meals; and consumption of whole-grain products, green vegetables, meat, and alcohol. The results provide first insights into possible associations between meal patterns and sociodemographic and health factors, and can benefit disease prevention and health promotion in older adults.

Psychosocial factors influencing the eating behaviours of older adults: A systematic review

Our understanding of how eating behaviours change in later life have been dominated by the studies of physiological and biological influences on malnutrition. Insights from these studies were consequently used to develop interventions, which are predominantly aimed at rectifying nutritional deficiencies, as opposed to interventions that may enable older adults to eat well and enjoy their food-related life well into older age. The objective of the present review is to summarise the existing knowledge base on psychosocial influences on eating behaviours in later life. Following comprehensive searches, review, and appraisal, 53 articles were included (22 qualitative and 31 quantitative) to provide a greater understanding of the mechanisms underpinning the psychosocial factors influencing eating behaviours. Our analysis identified eight underpinning psychosocial factors that influences eating behaviours in later life; (1) health awareness & attitudes, (2) food decision making, (3) perceived dietary control, (4) mental health & mood, (5) food emotions & enjoyment, (6) eating arrangements, (7) social facilitation, and (8) social support. The importance and lasting influence of early food experiences were also identified as contributing to eating behaviours in later life. The review concludes with the call for further investigation into specific psychosocial factors that influence eating behaviour, calls for improvements in methodologies, and a summary of psychosocial barriers and enablers to eating well in later life.

Nostalgia evocation through seasonality-conscious purchasing behavior revealed by online survey using vegetable names

Food can be a valuable mediator of nostalgia. Japanese food culture places a great emphasis on seasons, and thus there may be a relationship between nostalgic foods and seasonality. In this study, we hypothesized that participants who emphasized seasonality at the time of vegetable purchase (seasonality-oriented; hereafter, SO) would be more likely to feel vegetable-evoked nostalgia than those who did not (non-seasonality-oriented; hereafter, non-SO). To test this hypothesis, we administered an online survey to older Japanese adults regarding 103 representative vegetables considered to be seasonal foods. After participants selected vegetables that they had eaten, they then selected those that evoked nostalgia (hereafter, nostalgic vegetables). For each nostalgic vegetable, they evaluated the degree of nostalgia and state if a past event (autobiographical memory) was recalled. If an autobiographical memory was recalled for a certain nostalgic vegetable, nostalgia for that memory was evaluated. Comparing between SO and non-SO participants, SO participants had significantly higher numbers of nostalgic vegetables with associated autobiographical memories, as well as nostalgia for those vegetables and autobiographical memories. The results supported our hypothesis, suggesting that seasonality-conscious purchasing behavior evokes nostalgia.

Food and alcohol disturbance among young adults during the COVID-19 lockdown in Italy: risk and protective factors

PURPOSE

The COVID-19 lockdown measures have had a significant impact on risk behaviors as alcohol use and disordered eating. However, little is known about a serious health-risk-behavior named "food and alcohol disturbance" (FAD), characterized by engaging in dysfunctional eating on days of planned alcohol consumption. The aim of the present study was to investigate potential factors that may have put young adults at risk or protected against FAD during the COVID-19 lockdown.

METHODS

A sample of 447 young adults (280 females, 167 males; range 18-26) completed an online survey during the country's nationwide lockdown composed of self-reported measures assessing FAD behaviors, alcohol consumption, compensatory behaviors, eating and weight concerns, social support, emotion regulation strategies, and living arrangement.

RESULTS

Our findings showed that FAD was significantly and positively correlated to alcohol consumption, use of laxatives, self-induced vomiting, eating and weight concerns, and expressive suppression, and negatively correlated to social support and living with family. Hierarchical regression analysis revealed that alcohol consumption, eating concern, and expression suppression positively predicted FAD, while social support and living with family were negative predictors.

CONCLUSIONS

Our results suggest that during the COVID-19 lockdown, preoccupation with eating and the use of expressive suppression may have increased vulnerability to FAD; conversely, perceived social support and living with family may have been a source of protection against this dysfunctional behavior.

LEVEL OF EVIDENCE

Level V, descriptive study.

The lack of opportunity to eat together is associated with an increased risk of weight loss among independent older adults: a prospective cohort study based on the JAGES

OBJECTIVE

the present study aimed to investigate the relationship between the frequency of eating together and the risk of weight loss in older adults.

METHODS

this was a three-year follow-up prospective cohort study based on a self-reported questionnaire. We used data from the Japan Gerontological Evaluation Study (JAGES) conducted in 2016 and 2019. The participants were independent older adults aged ≥65 years in Japan. We used >5% weight loss during follow-up as the outcome variable and frequency of eating together as the explanatory variable. The relative risks (RRs) and 95% confidence intervals (95% CIs) were estimated based on the Poisson regression model with a Huber-White sandwich estimator for standard errors, including possible confounders.

RESULTS

among 56,919 participants, the mean age was 73.0 years (1SD = 5.5) at baseline, and 47.9% were male. About 15.1% (n = 8,596) of the participants experienced >5% weight loss during follow-up. The proportion of each category of the eating together frequency was 36.6% for 'every day', 10.3% for 'several times a week', 26.8% for 'several times a month', 20.5% for 'several times a year' and 5.8% for 'seldom'. Compared to 'every day', only 'several times a year (RR = 1.07, 95% CI = 1.01-1.13)' and 'seldom (RR = 1.17, 95% CI = 1.08-1.27)' were significantly associated with the increased risk of >5% weight loss.

CONCLUSION

there is a temporal association between less frequent opportunities to eat together and the increased risk of weight loss among independent older adults.

Interaction of Eating Status and Dietary Variety on Incident Functional Disability among Older Japanese Adults

OBJECTIVES

To examine whether eating status and dietary variety were associated with functional disability during a 5-year follow-up analysis of older adults living in a Japanese metropolitan area.

DESIGN

A 5-year follow-up study.

SETTING

Ota City, Tokyo, Japan.

PARTICIPANTS

A total of 10,308 community-dwelling non-disabled adults aged 65-84 years.

MEASUREMENTS

Eating status was assessed using a self-reported questionnaire. Dietary variety was assessed using the dietary variety score (DVS). Based on the responses, participants were classified according to eating alone or together and DVS categories (low: 0-3; high: 4-10). Functional disability incidence was prospectively identified using the long-term care insurance system's nationally unified database. Multilevel survival analyses calculated the adjusted hazard ratio (HR) and 95% confidence interval (CI) for incident functional disability.

RESULTS

During a 5-year follow-up, 1,991 (19.3%) individuals had functional disabilities. Eating status or DVS were not independently associated with incident functional disability. However, interaction terms between eating status and DVS were associated with functional disability; HR (95% CI) for eating together and low DVS was 1.00 (0.90-1.11), eating alone and high DVS was 0.95 (0.77-1.17), and eating alone and low DVS was 1.20 (1.02-1.42), compared to those with eating together and high DVS.

CONCLUSION

Older adults should avoid eating alone or increase dietary variety to prevent functional disability. This can be ensured by providing an environment of eating together or food provision services for eating a variety of foods in the community.

Combined impacts of physical activity, dietary variety, and social interaction on incident functional disability in older Japanese adults

BACKGROUND

This 3.6-year prospective study examined combined impacts of physical activity, dietary variety, and social interaction on incident disability and estimated population-attributable fraction for disability reduction in older adults.

METHODS

Participants were 7,822 initially non-disabled residents (3,966 men; 3,856 women) aged 65-84 years of Ota City, Tokyo, Japan. Sufficiency of moderate-to-vigorous-intensity physical activity (MVPA) ≥150 min/week, dietary variety score (DVS) ≥3 (median), and social interaction (face-to-face and/or non-face-to-face) ≥1 time/week was assessed using self-administered questionnaires. Disability incidence was prospectively identified using the long-term care insurance system's nationally unified database.

RESULTS

During a follow-up of 3.6 years, 1,046 (13.4%) individuals had disabilities. Independent multivariate-hazard ratios (HRs) and 95% confidence intervals of MVPA, DVS, and social interaction sufficiency for incident disability were 0.68 (0.59-0.78), 0.87 (0.77-0.99), and 0.91 (0.79-1.03), respectively. Incident disability HRs (95% CIs) gradually reduced with increased frequency of satisfying these behaviors (any one: 0.82, 0.65-1.03; any two: 0.65, 0.52-0.82; and all three behaviors: 0.54, 0.43-0.69), in an inverse dose-response manner (P < 0.001 for trend). Population-attributable fraction for disability reduction in satisfying any one, any two, and all three behaviors were 4.0% (-0.2, 7.9), 9.6% (4.8-14.1), and 16.0% (8.7-22.8), respectively.

CONCLUSION

Combining active physical activity, dietary variety, and social interaction substantially enhances the impacts on preventing disability among older adults, with evidence of an inverse dose-response manner. Adding the insufficient behavior element to individual habits and preexisting social group activities may be effective in preventing disability in the community.

A human voice, but not human visual image makes people perceive food to taste better and to eat more: "Social" facilitation of eating in a digital media

Food tastes better and people eat more when eating with others compared to eating alone. Although previous research has shown that watching television facilitates eating, the influencing factors regarding video content are unclear. We compared videos of a person speaking with those of only objects (food and a cell phone) in Experiment 1, and videos of groups of four people talking in Experiment 2. Half of these videos presented human voices (including the objects-only video), while the other half had no audio. Results showed participants rated the popcorn as tasting better and consumed more when eating alone while listening to someone talking, irrespective of whether the person was present or absent in the video in Experiment 1. A similar result was found in Experiment 2, irrespective of the increased number of people talking in the video. In Experiment 3, we assessed to what extent human voices contributed to an increase in food intake and the perceived taste of food by substituting sine-wave speech (SWS) for human voices used in Experiment 1 and found that the perceived taste of food and food intake were not facilitated when participants watched videos with SWS. The present study indicates that the human voice plays a crucial role in the perceived taste of food and consumption amount when people eat alone while watching television. Suggestions to improve food enjoyment when dining alone are discussed.

Association of the Healthy Eating Index with Metabolic Abnormalities among Middle-Aged Adults Living in Single-Person Households in Korea

This study aimed to analyze the association between the dietary lifestyles and health outcomes among middle-aged (40-64 years old) and elderly (65 years old and older) individuals living alone using the Korean Healthy Eating Index (KHEI). The study was conducted with 1442 participants (475 men and 967 women) aged 40 years and older living in single-person households using the Korea National Health and Nutrition Examination Survey from 2016 to 2018. The KHEI scores were calculated based on the 24-h recall data of dietary intake. Among women living alone, the total KHEI score of the participants aged 40-64 years was 65.92, which was significantly lower than the 70.66 of those aged 65 years and older (p = 0.0152). In addition, the total score in the adequacy domain was significantly lower among the 40~64-year-old group than those aged 65 years and older (p = 0.0011). Among the elderly in single-person households, the odds of diabetes in the T1 group were 2.08 times higher than those in the T3 group according to the KHEI (95% confidence interval: 1.36-3.17). The results of this study are expected to be used as baseline data to establish nutrition, home meal replacement utilization, and health policies for the elderly living alone.

Watching a remote-video confederate eating facilitates perceived taste and consumption of food

People eat more when their eating confederates eat a lot. However, it was not clear whether participants' eating is changed by a remote-video confederate. We compared three types of silent videos: 1) a stranger eating potato chips, 2) the stranger calling on the phone, or 3) only objects (food and cellphone). Participants perceived popcorn to taste better only when they watched the video of others eating. Watching others eating induced the participants to eat more than when watching the other two videos. This study indicates that remote-video confederates enhance not only food intake but also the perceived taste of food.

Food-related quality of life among older adults living in community: A multi-factorial approach

BACKGROUND & AIMS

Food-related quality of life (FRQoL) assesses the specific impact of diet, eating behaviors, and food-related anxiety on a person's Health-related quality of life. The food serves a set of purposes that go beyond supplying the basic physiological needs, it also has a hedonic and social dimension. In addition, the relationship between food and health and well-being nowadays is unquestionable. This study aims to investigate the multidimensional aspects of FRQoL by identification the underlying factors associated to it.

METHODS

This cross-sectional study is part of the Pronutrisenior project and included 602 older adults (>65 years old) from Vila Nova da Gaia, Portugal. Data were collected by a questionnaire of indirect application by trained nutritionists in a face-to-face situation. FRQoL was assessed by The Satisfaction with Food-Related Life Scale.

RESULTS

Women, younger individuals and those with inadequate social support network had lower FRQoL. Insomnia and nutritional risk were also related to lower FRQoL.

CONCLUSIONS

Our findings should be taken into account in clinical practice in order to optimize the intervention of health professionals, and the groups identified as having lower FRQoL should be given special attention.

Weight-related behaviors and weight loss maintenance: a cross-sectional study in Cyprus

Background

This study examined the differences between maintainers and regainers regarding obesity related eating behaviors. A secondary objective was to develop an eating behavior index predicting the likelihood of successful weight loss maintenance.

Methods

The current cross-sectional evaluation conducted in Cyprus was part of the MedWeight (Greek) study. Eligible for participation were Cypriot (maintainers = 145; regainers = 87) adult men and women who reported being at least overweight (BMI ≥25 kg/m²) and experienced an intentional weight loss of ≥10% of their maximum lifetime weight, at least 1 year before participation. Among other assessments, weight-related behaviors were evaluated through Weight-Related Behaviors Index (WRBI).

Results

Statistically significant differences between the two groups were observed regarding meals per day (P = 0.008), frequency of eating home cooked meals (P = 0.004) and WRBI total score (P = 0.022). Results from logistic regression models indicated that the odds of maintaining weight loss increase at 30% (Model 1: P < 0.05, Odds ratio 1.306, 1.095–1.556 95% C.I., Model 2: P < 0.05, OR 1.308, 1.097–1.560 95% C.I.) and at 38% after adjusting for physical activity (Model 3: P < 0.05, OR 1.377, 1.114–1.701 95% C.I..) for each point scored in WRBI total score.

Conclusions

Eating more frequently home cooked meals and less eating away from home meals may be beneficially associated with weight loss maintenance. WRBI seems to be a useful tool when dealing with patients who have previously lost significant weight.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-021-11153-5.

Food and nutrient intake and diet quality among older Americans

OBJECTIVE

A suboptimal diet and nutritional deficiencies can have important influences on health with significant impact among older adults. This study aims to assess the presence of suboptimal dietary intake among older Americans and identify risk and protective factors influencing diet quality.

DESIGN

Cross-sectional secondary analysis.

SETTING

USA.

PARTICIPANTS

A nationally representative sample of 5614 community-dwelling older adults over age 54 in the Health and Retirement Study - Health Care and Nutrition Survey.

RESULTS

Overall, only 10·7 % of respondents had a good quality diet (Healthy Eating Index score 81 and above); the majority had diets considered poor or needing improvement. Less than 50 % of respondents met dietary guidelines and nutritional goals for most individual food groups and nutrients. Respondents with low socio-economic status, fewer psychosocial resources and those who had limited access to healthy food outlets were more likely to have a diet of suboptimal quality.

CONCLUSIONS

Efforts to remove identified barriers that put older adults at risk for poor nutrition and to provide resources that increase access to healthy food should be made to encourage healthy eating and enhance diet quality.

Factors Associated with Frailty According to Gender of Older Adults Living Alone

This study was conducted to identify the factors associated with frailty according to gender of older adults living alone in Korea. Data from the National Survey of the Living Conditions of Korean Elderly in 2017 were used. Participants were 2340 older adults who live alone. Frailty was determined based on the frailty criteria developed by van Kan et al. that consist of fatigue, resistance, ambulation, and illness. The collected data were analyzed using descriptive statistics, chi-squared test, t-test, Jonckheere–Terpstra test and multinomial logistic regression. Among the older men living alone, 47.7% were in the pre-frail and 5.1% were in the frail. On the other hand, 51.8% were in the pre-frail and 12.2% were in the frail among the older women living alone. The factors associated with frailty according to gender are as follows. In males, depressive symptoms, limitation in IADL, and number of medications in pre-frail; BMI, limitation in IADL, and number of chronic diseases in frail. In females, depressive symptoms, number of chronic diseases, age, and nutritional status in pre-frail; limitation in IADL, depressive symptoms, age, number of chronic diseases, number of medications, nutritional status in frail. Based on the findings of this study, it is considered necessary to approach frailty management considering gender as well as the classification of frailty.

Eating Alone or Together among Community-Living Older People-A Scoping Review

Research on healthy aging commonly concerns problems related to loneliness and food intake. These are not independent aspects of health since eating, beyond its biological necessity, is a central part of social life. This scoping review aimed to map scientific articles on eating alone or together among community-living older people, and to identify relevant research gaps. Four databases were searched, 989 articles were identified and 98 fulfilled the inclusion criteria. In the first theme, eating alone or together are treated as central topics of interest, isolated from adjoining, broader concepts such as social participation. In the second, eating alone or together are one aspect of the findings, e.g., one of several risk factors for malnutrition. Findings confirm the significance of commensality in older peoples' life. We recommend future research designs allowing identification of causal relationships, using refined ways of measuring meals alone or together, and qualitative methods adding complexity.