Historical Structural Racism in the Built Environment and Physical Health among Residents of Allegheny County, Pennsylvania.

Historical structural racism in the built environment contributes to health inequities, yet to date, research has almost exclusively focused on racist policy of redlining. We expand upon this conceptualization of historical structural racism by examining the potential associations of probable blockbusting, urban renewal, and proximity to displacement from freeway construction, along with redlining, to multiple contemporary health measures. Analyses linked historical structural racism, measured continuously at the census-tract level using archival data sources, to present-day residents' physical health measures drawn from publicly accessible records for Allegheny County, Pennsylvania. Outcome measures included average life expectancy and the percentage of residents reporting hypertension, stroke, coronary heart disease, smoking, insufficient sleep, sedentary behavior, and no health insurance coverage. Multiple regression analyses were conducted to examine separate and additive associations between structural racism and physical health measures. Redlining, probable blockbusting, and urban renewal were associated with shorter life expectancy and a higher prevalence of cardiovascular conditions, risky health behaviors, and residents lacking health insurance coverage. Probable blockbusting and urban renewal had the most consistent correlations with all 8 health measures, while freeway displacement was not reliably associated with health. Additive models explained a greater proportion of variance in health than any individual structural racism measure alone. Moreover, probable blockbusting and urban renewal accounted for relatively more variance in health compared to redlining, suggesting that research should consider these other measures in addition to redlining. These preliminary correlational findings underscore the importance of considering multiple aspects of historical structural racism in relation to current health inequities and serve as a starting point for additional research.

Anxious youth and adults share threat-biased interpretations of linguistic and visual ambiguity: A proof of concept study.

Interpretation bias, or the threatening appraisal of ambiguous information, has been linked to anxiety disorder. Interpretation bias has been demonstrated for linguistic (e.g., evaluation of ambiguous sentences) and visual judgments (e.g., categorizing emotionally ambiguous facial expressions). It is unclear how these separate components of bias might be associated. We examined linguistic and visual interpretation biases in youth and emerging adults with (n = 44) and without (n = 40) anxiety disorder, and in youth-parent dyads (n = 40). Linguistic and visual biases were correlated with each other, and with anxiety. Compared to non-anxious participants, those with anxiety demonstrated stronger biases, and linguistic bias was especially predictive of anxiety symptoms and diagnosis. Age did not moderate these relationships. Parent linguistic bias was correlated with youth anxiety but not linguistic bias; parent and youth visual biases were correlated. Linguistic and visual interpretation biases are linked in clinically-anxious youth and emerging adults.

"I knew the effects the whole time." Examination of facilitators and barriers to quit vaping among adolescents.

Despite declines in adolescent nicotine vaping during the COVID-19 pandemic, vaping continues to be a public health issue for many adolescents. Most studies on teen reasons for vaping and on barriers and facilitators of vaping were conducted prior to the pandemic. Because teen culture changes so rapidly, and because the pandemic had wide-reaching effects on teens and mental health, it is critical to have a current understanding what helps adolescents to quit vaping (facilitators), as well as what prevents them from quitting (barriers) in order to design effective and engaging interventions. The objective of this qualitative study was to examine reasons for vaping, and barriers and facilitators to quitting vaping among high school age (14-18 years old) students. Students (n = 28; 60.7 % female; 50 % White, 10.7 % Black or African American, 25 % Asian or Asian American, 3.6 % other non-Hispanic; 7.2 % Hispanic; 21.4 % former vapers, 78.6 % current vapers) were recruited online from four regions in the US and participated in one of five online focus groups. We conducted a content analysis of the focus groups using a team-based coding approach. The most frequently cited reasons for vaping were mood, peer influence, and boredom. Results also showed that the stigma of seeking treatment acted as a barrier to quitting vaping, while self-reflection acted as a facilitator. In addition, two factors, peer influence and health effects, served as both barriers and facilitators, depending on the context. Program developers can use this information to design engaging vaping cessation programs intended for adolescents.

Scalable Transdiagnostic Early Assessment of Mental Health (STREAM): a study protocol.

INTRODUCTION: Early childhood development forms the foundations for functioning later in life. Thus, accurate monitoring of developmental trajectories is critical. However, such monitoring often relies on time-intensive assessments which necessitate administration by skilled professionals. This difficulty is exacerbated in low-resource settings where such professionals are predominantly concentrated in urban and often private clinics, making them inaccessible to many. This geographic and economic inaccessibility contributes to a significant 'detection gap' where many children who might benefit from support remain undetected. The Scalable Transdiagnostic Early Assessment of Mental Health (STREAM) project aims to bridge this gap by developing an open-source, scalable, tablet-based platform administered by non-specialist workers to assess motor, social and cognitive developmental status. The goal is to deploy STREAM through public health initiatives, maximising opportunities for effective early interventions. METHODS AND ANALYSIS: The STREAM project will enrol and assess 4000 children aged 0-6 years from Malawi (n=2000) and India (n=2000). It integrates three established developmental assessment tools measuring motor, social and cognitive functioning using gamified tasks, observation checklists, parent-report and audio-video recordings. Domain scores for motor, social and cognitive functioning will be developed and assessed for their validity and reliability. These domain scores will then be used to construct age-adjusted developmental reference curves. ETHICS AND DISSEMINATION: Ethical approval has been obtained from local review boards at each site (India: Sangath Institutional Review Board; All India Institute of Medical Science (AIIMS) Ethics Committee; Indian Council of Medical Research-Health Ministry Screening Committee; Malawi: College of Medicine Research and Ethics Committee; Malawi Ministry of Health-Blantyre District Health Office). The study adheres to Good Clinical Practice standards and the ethical guidelines of the 6th (2008) Declaration of Helsinki. Findings from STREAM will be disseminated to participating families, healthcare professionals, policymakers, educators and researchers, at local, national and international levels through meetings, academic journals and conferences.

Collaboration With Tribal Stakeholders to Explore Care for Postpartum Depression in the Chickasaw Nation.

OBJECTIVE: To describe and interpret Indigenous women's experiences of postpartum depression (PPD) from the perspectives of community advisory board members. DESIGN: Qualitative, descriptive design with a community-engagement approach. SETTING: Virtual group interviews. PARTICIPANTS: Community advisory board members (N = 8) who were tribal employees, citizens of the tribe, and/or family members of citizens who had detailed knowledge of PPD among Indigenous women and issues surrounding their care. METHODS: In video- and audio-recorded virtual group interviews, we asked participants questions using a semistructured interview guide. We used qualitative content analysis to generate results. RESULTS: Major themes included The "Who, What, and Where" of PPD in Indigenous Women; Meanings Attributed to PPD in Indigenous Women; Realities of PPD Care in the Chickasaw Nation; and Feasibility, Acceptability, Perceived Barriers, and Facilitators of a Future Collaboration. CONCLUSION: The participants identified next steps for addressing PPD in the Chickasaw Nation: raise awareness of PPD among providers, patients, and families; improve messaging about PPD to decrease stigma and normalize mental health care; and develop or adapt a culturally appropriate and relevant tool to screen for PPD in Indigenous women.

Baby Food Pouches, Baby-Led Weaning, and Iron Status in New Zealand Infants: An Observational Study.

Iron deficiency in infants can impact development, and there are concerns that the use of baby food pouches and baby-led weaning may impair iron status. First Foods New Zealand (FFNZ) was an observational study of 625 New Zealand infants aged 6.9 to 10.1 months. Feeding methods were defined based on parental reports of infant feeding at "around 6 months of age": "frequent" baby food pouch use (five+ times per week) and "full baby-led weaning" (the infant primarily self-feeds). Iron status was assessed using a venepuncture blood sample. The estimated prevalence of suboptimal iron status was 23%, but neither feeding method significantly predicted body iron concentrations nor the odds of iron sufficiency after controlling for potential confounding factors including infant formula intake. Adjusted ORs for iron sufficiency were 1.50 (95% CI: 0.67-3.39) for frequent pouch users compared to non-pouch users and 0.91 (95% CI: 0.45-1.87) for baby-led weaning compared to traditional spoon-feeding. Contrary to concerns, there was no evidence that baby food pouch use or baby-led weaning, as currently practiced in New Zealand, were associated with poorer iron status in this age group. However, notable levels of suboptimal iron status, regardless of the feeding method, emphasise the ongoing need for paying attention to infant iron nutrition.

Providing Groceries and Transportation to Poverty-Exposed Pediatric Oncology Families: The PediCARE Pilot Randomized Clinical Trial.

This randomized clinical trial evaluates the Pediatric Cancer Resource Equity (PediCARE) intervention, which provided groceries and transportation, vs usual care, for poverty-exposed pediatric oncology families.

Patient navigation for perinatal substance use disorder treatment: A systematic review.

BACKGROUND: Substance use during the perinatal period (i.e., pregnancy through the first year postpartum) can pose significant maternal and infant health risks. However, access to lifesaving medications and standard care remains low for perinatal persons who use substances. This lack of substance use disorder treatment access stems from fragmented services, stigma, and social determinants of health-related barriers that could be addressed using patient navigators. This systematic review describes patient navigation models of care for perinatal people who use substances and associated outcomes. METHODS: We conducted a structured search of peer-reviewed, US-focused, English- or Spanish-language articles from 2000 to 2023 focused on 1) patient navigation, 2) prenatal and postpartum care, and 3) substance use treatment programs using PubMed, Scopus, PsycINFO, and CINAHL databases. RESULTS: After meeting eligibility criteria, 17 studies were included in this review. The majority (n=8) described outpatient patient navigation programs, with notable hospital (n=4) and residential (n=3) programs. Patient navigation was associated with reduced maternal substance use, increased receipt of services, and improved maternal and neonatal health. Findings were mixed for engagement in substance use disorder treatment and child custody outcomes. Programs that co-located care, engaged patients across the perinatal period, and worked to build trust and communication with family members and service providers were particularly successful. CONCLUSION: Patient navigation may be a promising strategy for improving maternal and infant health outcomes among perinatal persons who use substances. More experimental research is needed to test the effect of patient navigation programs for perinatal persons who use substances compared to other models of care.

"You Have to Be a Doctor First": Trauma Surgeons' Perspectives on Police Interactions in the Hospital.

BACKGROUND: Police activity in emergency medical settings has been shown to complicate the care of patients and impact patient-provider relationships. Recent scholarship has called for clear hospital policy outlining the terms of police access to patients and the role of clinicians. Despite regular contact between trauma surgeons and police, research on the impact of police activity on trauma care has been limited. METHODS: Semi-structured interviews were conducted with attending trauma surgeons and general surgery residents (N = 13) at 3 urban hospitals about their interactions with police in clinical settings. Participants were recruited using snowball sampling. Interviews were audio-recorded, transcribed, and analyzed for recurrent themes using an iterative grounded theory process. RESULTS: Participants reported routine contact with police that required active negotiation of the scope of clinical and police authority in the hospital. These negotiations were shaped by prior experiences, perceptions of police, officer behavior, and institutional culture. Surgeons felt compelled to advocate for patients, but reported intimidation in moments of conflict. Participants noted uncertainty around the legal dimensions of their relationship to police and a lack of universal guidance on appropriate responses. DISCUSSION: This data points to the need for improvements in both policy and workflow to regulate and reduce the burden of these interactions and protect clinicians' priorities from being subordinated to those of police. Further research is needed to understand how police presence impacts patient outcomes, and to guide best practices for regulating and mitigating potential negative impact.

Referrals for proliferative diabetic retinopathy from two UK diabetic retinopathy screening services: a 10-year analysis of visual outcomes, requirement for vitrectomy, and mortality.

BACKGROUND/OBJECTIVES: To determine long-term outcomes of patients referred with proliferative diabetic retinopathy (PDR) from diabetic eye screening programmes (DESP) to tertiary care centres in the United Kingdom (UK). METHODS: Retrospective multicentre study of patients referred from two DESPs in the UK over a 36-month period (2007-9) and followed-up for 10 years. Critical outcomes included severe vision loss (SVL) and the need for vitrectomy. Other outcomes assessed included moderate vision loss (MVL), and patient survival time. Univariate and multiple variable Cox proportional hazards regressions were used to analyse survival outcomes. RESULTS: 212 eyes of 150 patients were referred with a diagnosis of PDR. 109 eyes of 72 patients were confirmed to have active PDR and included in the study. 61% of patients had low-risk PDR, while 39% exhibited high-risk features in at least one eye. Eight (7.3%) eyes developed SVL and 16 (14.7%) MVL during follow up. Vitrectomy was required in 24% (95% CI: 15 to 31%) of all PDR eyes and was most commonly performed for vitreous haemorrhage (65%). The 10-year survival in all PDR patients was 76% (95% CI: 63 to 85%) with the mean time to death for all deceased patients being 5.4 ± 3.6 years. On multivariable analysis, only age was found to have a significant association with the survival of patients with PDR. CONCLUSIONS: During the 10 year follow up SVL was uncommon, but MVL occurred in almost one-fifth of the eyes. Approximately 1 in 4 eyes required vitrectomy, highlighting its significance in patient management.

Childhood trauma and hair cortisol response over the year following onset of a chronic life event stressor.

OBJECTIVE: Childhood trauma may contribute to poor lifelong health in part through programming of the HPA-axis response to future life stressors. To date, empirical evidence shows an association of childhood trauma with dysregulation of the HPA-axis and blunted cortisol reactivity to acute stressors. Here, we conduct an initial examination of childhood trauma as a moderator of changes over time in perceived stress levels and HPA-axis response to a major chronic stressor in adulthood. METHODS: Participants were 83 maternal caregivers of children newly diagnosed with cancer who completed the Childhood Trauma Questionnaire (CTQ), and who, over the year following their child's cancer diagnosis, had hair samples collected up to 7 times for the assessment of cortisol and completed monthly measures of perceived stress. RESULTS: CTQ scores were in the expected range for a community sample and associated with changes in perceived stress and cortisol concentration over time (γ =.003, p =.002; γ = -.0004, p =.008, respectively) independently of age, education, treatment intensity and randomization to stress management intervention. Maternal caregivers who endorsed lower childhood trauma showed a steeper decline in perceived stress and a larger increase in cortisol levels across the year than caregivers who recalled more childhood trauma. CONCLUSIONS: Findings extend animal models and studies that examine cortisol reactivity to acute stressors and suggest that childhood trauma may program a phenotype that is more psychologically reactive but shows a blunted HPA-axis response to chronic stress. While adaptive in the short-term, this early life programming may incur long-term costs for health. Further work is warranted to examine this possibility.

A systematic review of the associations between protective behavioral strategies and heavy alcohol consumption and consequences among young adults.

OBJECTIVE: We systematically reviewed the literature to assess the association between use of alcohol protective behavioral strategies (PBS) and young adult heavy drinking and alcohol-related consequences. METHOD: We followed the preferred reporting items for systematic review and meta-analysis guidelines to select and review research studies that were comprised of a sample of young adults ages 18-26, included PBS derived from one of 10 validated scales as an independent variable, measured heavy alcohol use or alcohol consequences as the dependent variable, and tested the direct association between the two. Studies were gathered via PubMed, Scopus, Cumulative Index to Nursing and Allied Health Literature, APA PsycInfo, and Global Health. All identified study records underwent a two-step screening process and risk of bias assessment. RESULTS: Data were extracted from 94 studies that met inclusion criteria; 16 studies (17%) examined associations with heavy alcohol use and 91 studies (97%) tested effects of PBS on alcohol consequences. All studies that measured a total effect of PBS use (summations across all strategies) found significant negative associations with heavy alcohol use and 91% were negatively associated with alcohol consequences. Most studies that examined subscales of PBS found at least one significant, negative relation with heavy alcohol use (73%) and alcohol-related consequences (78%), though effects varied across type of subscale (e.g., manner of drinking). CONCLUSIONS: Our results support the use of PBS to address heavy alcohol consumption and related harms among young adults. Opportunities for refinement of current PBS in preventive interventions are discussed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Understanding eating disorder symptoms in adolescents: testing a cognitive-behavioural model of eating disorders in a community sample.

Clinical perfectionism, self-esteem, mood intolerance, and interpersonal difficulties are associated with eating disorder symptoms in clinical samples. The aim of the current study was to test a model including clinical perfectionism, self-esteem, mood intolerance, and interpersonal difficulties to understand eating disorder symptoms in an adolescent community sample. Adolescents (N = 446, M age = 16.25 years, SD = 1.64; 74.2% female) completed measures of clinical perfectionism, self-esteem, mood intolerance, interpersonal difficulties, and eating disorder symptoms. Path analysis indicated clinical perfectionism, self-esteem, mood intolerance, and interpersonal difficulties were all directly associated with symptoms of eating disorders, and that clinical perfectionism was indirectly associated with eating disorders through self-esteem, mood intolerance, and interpersonal difficulties. The results indicate the cognitive-behavioural model of eating disorders can be applied to adolescents in the community with symptoms of eating disorders. Directional causality between constructs should be established to understand whether increased clinical perfectionism, and reduced self-esteem, mood intolerance, and interpersonal difficulties are vulnerabilities to the development and maintenance of eating disorders.

Direct, indirect, and reciprocal associations between perfectionism, compulsive exercise and eating disorder pathology in adolescents with eating disorders.

BACKGROUND: There is a strong association between perfectionism and eating disorders. In a cognitive-behavioural model of compulsive exercise it has been suggested there are reciprocal associations between perfectionism, eating disorder pathology, and compulsive exercise. No study has examined if there is an indirect association between perfectionism and compulsive exercise through eating disorder pathology, which would inform a preliminary understanding of the cognitive-behavioural model of compulsive exercise. METHODS: The sample included 301 adolescent females diagnosed with eating disorders (age M = 14.89, SD = 0.85, range 13-17). We tested models of direct and indirect associations of compulsive exercise in the relationship between perfectionism and eating disorder pathology, and direct and indirect associations of eating disorder pathology in the relationship between compulsive exercise and perfectionism. RESULTS: Perfectionism was directly associated with eating disorder pathology and compulsive exercise. Perfectionism was indirectly associated with eating disorder pathology through compulsive exercise. Perfectionism also had an indirect association with compulsive exercise through eating disorder pathology. DISCUSSION: The findings suggest it would be useful for future prospective research to examine the cognitive-behavioural model of compulsive exercise in adolescents with eating disorders. Compulsive exercise and perfectionism may be useful targets for future research to improve eating disorder treatment. Level of evidence Level V: Opinions of respected authorities, based on descriptive studies, narrative reviews, clinical experience, or reports of expert committees.

The importance of decomposing periodic and aperiodic EEG signals for assessment of brain function in a global context.

Measures of early neuro-cognitive development that are suitable for use in low-resource settings are needed to enable studies of the effects of early adversity on the developing brain in a global context. These measures should have high acquisition rates and good face and construct validity. Here, we investigated the feasibility of a naturalistic electroencephalography (EEG) paradigm in a low-resource context during childhood. Additionally, we examined the sensitivity of periodic and aperiodic EEG metrics to social and non-social stimuli. We recorded simultaneous 20-channel EEG and eye-tracking in 72 children aged 4-12 years (45 females) while they watched videos of women singing nursery rhymes and moving toys, selected to represent familiar childhood experiences. These measures were part of a feasibility study that assessed the feasibility and acceptability of a follow-up data collection of the South African Safe Passage Study, which tracks environmental adversity and brain and cognitive development from before birth up until childhood. We examined whether data quantity and quality varied with child characteristics and the sensitivity of varying EEG metrics (canonical band power in the theta and alpha band and periodic and aperiodic features of the power spectra). We found that children who completed the EEG and eye-tracking assessment were, in general, representative of the full cohort. Data quantity was higher in children with greater visual attention to the stimuli. Out of the tested EEG metrics, periodic measures in the theta frequency range were most sensitive to condition differences, compared to alpha range measures and canonical and aperiodic EEG measures. Our results show that measuring EEG during ecologically valid social and non-social stimuli is feasible in low-resource settings, is feasible for most children, and produces robust indices of social brain function. This work provides preliminary support for testing longitudinal links between social brain function, environmental factors, and emerging behaviors.

Vaccination during pregnancy by race/ethnicity: a focus on American Indians/Alaska Natives.

BACKGROUND: Vaccination during pregnancy reduces the incidence of infections and their associated adverse outcomes in both mothers and infants. The American College of Obstetricians and Gynecologists has recommended influenza and Tdap vaccination during pregnancy since 2004 and 2013, respectively. Several studies have examined disparities in vaccination rates during pregnancy by race/ethnicity. However, none have included American Indians/Alaska Natives as a specific racial/ethnic group on a national level. Current literature suggests that American Indian/Alaska Native infants experience increased morbidity and mortality from both influenza and pertussis infections compared with most other groups in the United States. OBJECTIVE: This study aimed to evaluate the uptake of influenza and Tdap vaccinations during pregnancy by race/ethnicity, with a specific focus on American Indian/Alaska Native people. STUDY DESIGN: This cross-sectional study used data from the Pregnancy Risk Assessment Monitoring System. Comparisons of vaccine uptake across racial/ethnic groups (American Indian/Alaska Native, Asian, non-Hispanic Black, non-Hispanic White, Hispanic, and "None of the above") were evaluated using weighted logistic regression analyses to estimate prevalence odds ratios with 95% confidence intervals. Models were adjusted for maternal age, parity, maternal education, marital status, payment method at delivery, prenatal care in first trimester, maternal smoking status, Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) participation, and receipt of influenza vaccine reported by a health care provider. RESULTS: For both vaccines, Asian respondents had the highest uptake (influenza, 70.1%; Tdap, 68.2%), whereas Black respondents reported the lowest uptake (influenza, 44.4%; Tdap, 57.9%). For the influenza vaccine, American Indian/Alaska Native respondents demonstrated a higher uptake compared with White respondents, and the magnitude of difference increased markedly after adjusting for respondent characteristics (adjusted odds ratio, 1.74; 95% confidence interval, 1.58-1.90). In the unadjusted analyses, Black individuals reported influenza vaccination at approximately half the rate of their White counterparts during pregnancy. This effect was attenuated but remained lower after adjustment for respondent characteristics (adjusted odds ratio, 0.73; 95% confidence interval, 0.70-0.76). For the Tdap vaccine, American Indian/Alaska Native respondents reported lower uptake than White respondents; however, this difference disappeared when adjusted for respondent characteristics (adjusted odds ratio, 0.99; 95% confidence interval, 0.83-1.19). Asian and Hispanic respondents displayed a similar uptake compared with their White counterparts for both vaccines. CONCLUSION: Our findings indicate that there are racial/ethnic disparities in influenza and Tdap vaccination rates among pregnant individuals in the United States. Demonstration of increased uptake among American Indian/Alaska Native people in the crude analysis may reflect the success of various public health interventions through Tribal and Indian Health Service hospitals. Nonetheless, vaccination status during pregnancy remains seriously below national guideline recommendations. Greater measures must be taken to support preventative care in marginalized populations, with particular emphasis on community-driven solutions rooted in justice.

Editorial Perspective: The paradox of precision health in early development - building large samples to yield individual-level measures.

Precision health refers to the use of individualised biomarkers or predictive models to provide more tailored information about an individual's likely prognosis. For child psychiatry and psychology, we argue that this approach requires a focus on neurocognitive measures collected in early life and at large scale. However, the large sample sizes necessary to uncover individual-level predictors are currently rare in studies of neurodevelopmental conditions in early childhood. We recommend two strategies going forward: first, including neurocognitive measures in new national cohort studies, and second, synergising measures and data across currently funded longitudinal studies.

Nutrition interventions for body composition, physical function, cognition in hospitalized older adults: A systematic review of individuals 75 years and older.

BACKGROUND: Globally, the oldest old population is expected to triple by 2050. Hospitalization and malnutrition can result in progressive functional decline in older adults. Minimizing the impact of hospitalization on functional status in older adults has the potential to maintain independence, reduce health and social care costs, and maximize years in a healthy state. This study aimed to systematically review the literature to identify nutritional interventions that target physical function, body composition, and cognition in the older population (≥ 75 years). METHODS: A systematic review was conducted to evaluate the efficacy of nutritional interventions on physical function, body composition, and cognition in adults aged ≥ 75 years or mean age ≥80 years. Searches of PubMed (National Institutes of Health, National Library of Medicine), Scopus (Elsevier), EMBASE (Elsevier), Cumulative Index to Nursing and Allied Health Literature (CINAHL) with Full Text (EBSCOhost), and PsycInfo (EBSCOhost) were conducted. Screening, data extraction, and quality assessment were performed in duplicate and independently (CRD42022355984; https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=355984). RESULTS: Of 8311 citations identified, 2939 duplicates were excluded. From 5372 citations, 189 articles underwent full-text review leaving a total of 12 studies for inclusion. Interventions were food-based, protein-based, carbohydrate-based, personalized, or used parenteral nutrition. Ten studies monitored anthropometric or body composition changes with three showing maintenance or improvements in lean mass, body mass index, triceps skinfold, and mid-upper arm circumference compared with the control group. Six studies monitored physical function but only the largest study found a beneficial effect on activities of daily living. Two of three studies showed the beneficial effects of nutritional intervention on cognition. CONCLUSION: There are few, high-quality, nutrition-based interventions in older adults ≥75 years. Despite heterogeneity, our findings suggest that large, longer-term (>2 weeks) nutritional interventions have the potential to maintain body composition, physical function, and cognition in adults aged 75 years and older during hospitalization.

Shortening fire return interval predisposes west-central Canadian boreal peatlands to more rapid vegetation growth and transition to forest cover.

Climate change in northern latitudes is increasing the vulnerability of peatlands and the riparian transition zones between peatlands and upland forests (referred to as ecotones) to greater frequency of wildland fires. We examined early post-fire vegetation regeneration following the 2011 Utikuma complex fire (central Alberta, Canada). This study examined 779 peatlands and adjacent ecotones, covering an area of ~182 km2 . Based on the known regional fire history, peatlands that burned in 2011 were stratified into either long return interval (LRI) fire regimes of >80 years (i.e., no recorded prior fire history) or short fire return interval (SRI) of 55 years (i.e., within the boundary of a documented severe fire in 1956). Data from six multitemporal airborne lidar surveys were used to quantify trajectories of vegetation change for 8 years prior to and 8 years following the 2011 fire. To date, no studies have quantified the impacts of post-fire regeneration following short versus long return interval fires across this broad range of peatlands with variable environmental and post-fire successional trajectories. We found that SRI peatlands demonstrated more rapid vascular and shrub growth rates, especially in peatland centers, than LRI peatlands. Bogs and fens burned in 1956, and with little vascular vegetation (classified as "open peatlands") prior to the 2011 fire, experienced the greatest changes. These peatlands tended to transition to vascular/shrub forms following the SRI fire, while open LRI peatlands were not significantly different from pre-fire conditions. The results of this study suggest the emergence of a positive feedback, where areas experiencing SRI fires in southern boreal peatlands are expected to transition to forested vegetation forms. Along fen edges and within bog centers, SRI fires are expected to reduce local peatland groundwater moisture-holding capacity and promote favorable conditions for increased fire frequency and severity in the future.