Independence in everyday functioning has been associated with successful aging and declines in functioning may be indicative of pathological cognitive decline. Social determinants of health, like economic status and access to health care, a]lso play a role in everyday functioning. Understanding these factors are of particular importance for older Black adults who have had long-standing disparate access to care, education, and treatments. The current study aimed to evaluate social determinants of health, more specifically social engagement, as moderators of the association between cognition and everyday functioning.

A sample of 930 older Black adults from Rush University: The Memory and Aging Project, African American Clinical Core, and Minority Adult Research Study were used. Participants completed a battery of neuropsychological testing as well as questionnaires about their everyday functioning and social behaviors. Hierarchical linear regressions were utilized to determine to what extent social factors moderated the relationship between cognition and everyday functioning.

Late life social activity reduced the effect of global cognition on everyday functioning and was independently associated with everyday functioning. Social network size was associated with increased impairment.

Results from the current study provide novel information regarding the role of social interaction on cognition in an older Black adult sample. Future interventions may benefit from an emphasis on increasing social engagement.

This research aimed to comprehensively explore the impact of diverse challenges encountered by older adults on the development of post-traumatic stress disorder (PTSD). It delved into how these effects vary depending on individuals’ levels of trust in authority and medical professionals, providing a nuanced understanding of the interplay between external challenges, personal trust, and mental health outcomes in the older population.

The COVID-19 pandemic has imposed significant hardships, particularly on the ageing population, with potential psychological repercussions such as PTSD. Notably, there is a dearth of research exploring this association within the context of Chinese older adults, a group that may experience unique impacts due to cultural differences in the face of global crises.

Data were collected from a representative sample of 1,211 participants aged 60 years and above in Shenzhen. Logistic and hierarchical linear regression methods were utilized to investigate the relationship between the challenges posed by COVID-19, public trust, and the manifestation of PTSD symptoms.

Higher levels of challenges related to ‘supplies, services access and safety’, ‘abuse and conflicts’, and ‘anger and fear’ were associated with PTSD. Furthermore, a lower level of challenges related to ‘disease management and information’ was associated with PTSD. Trust in authority or medical professionals was the moderator between the challenges brought about by COVID-19 and PTSD, which helped to lower the impact of challenges. Despite the challenges brought by COVID-19 to people, nurturing a stronger sense of trust in authority and medical professionals would ease older adults’ psychological stress and concerns.

Research examining (MCI) criteria in diverse and/or health-disparate populations is limited. There is a critical need to investigate the predictive validity for incident dementia of widely used MCI definitions in diverse populations.

Eligible participants were non-Hispanic White or Black Bronx community residents, free of dementia at enrollment, with at least one annual follow-up visit after baseline. Participants completed annual neurological and neuropsychological evaluations to determine cognitive status. Dementia was defined based on DSM-IV criteria using case conferences. Cox proportional hazard models assessed predictive validity for incident dementia of four specific MCI definitions (Petersen, Jak/Bondi, number of impaired tests, Global Clinical Ratings) at baseline, controlling for age, sex, education, and race/ethnicity. Time-dependent sensitivity and specificity at 2–7 years for each definition, and Youden’s index were calculated as accuracy measures.

Participants (N = 1073) ranged in age from 70 to 100 (mean = 78.4 ± 5.3) years at baseline. The sample was 62.5% female, and educational achievement averaged 13.9 ± 3.5 years. Most participants identified as White (70.0%), though Black participants were well-represented (30.0%). In general, MCI definitions differed in sensitivity and specificity for incident dementia. However, there were no significant differences in Youden’s index for any definition, across all years of follow-up.

This work provides an important step toward improving the generalizability of the MCI diagnosis to underrepresented/health-disparate populations. While our findings suggest the studied MCI classifications are comparable, researchers and clinicians may choose to consider one method over another depending on the rationale for evaluation or question of interest.

Older age significantly increases risk for cognitive decline. A growing number of older adults (≥ 65 years) experience cognitive decline that compromises immediate and/or long-term health. Interventions to mitigate cognitive decline are greatly needed. Intermittent fasting aligned with innate circadian rhythms is associated with health benefits and improved circadian rhythms; here, we explore impacts on cognition and cardiometabolic outcomes.

We conducted a single-group, pre-/post-pilot study to explore an 8-week prolonged nightly fasting intervention (14 h fasting/night) among adults 65+ years with self-reported memory decline. We explored changes in cognitive function, insomnia, and cardiometabolic risk factors. Intervention engagement/adherence were assessed. The intervention was delivered fully remotely; participants completed their fasting protocol at home and were not required to come into the lab.

In total, 20 individuals signed consent and 18 participants completed the study. Participants were mean age 69.7 years, non-Hispanic White (89%), predominantly female (95%), married (50%), and employed (65%). Paired t-tests indicated an increase in cognitive function (Memory and Attention Phone Screener) (p = 0.02) with a medium effect size (Cohen’s d = 0.58) and a decrease in insomnia (Insomnia Severity Index) (p = 0.04) with a medium effect size (Cohen’s d = 0.52). Changes in BMI or diet quality were not observed. Engagement (66%–77%) and adherence (70%–100%) were high.

These pilot findings suggest that prolonged nightly fasting, targeted to align food intake with circadian rhythms, may improve cognitive function and sleep among older adults. Fully powered, randomized controlled trials to test the efficacy of this non-pharmacological, low cost-to-burden ratio intervention are needed.

Accurate appraisal of one’s own abilities (i.e., insight) is necessary for appropriate compensatory behaviors and sustained independence during aging. Although insight is often purported to be related to executive functioning (EF), nuanced understanding of the cognitive correlates of insight for functional abilities among nondemented older adults is lacking. Because insight shares neuroanatomic underpinnings with time-based prospective memory (PM), the present study examined the contributions of time-based PM, beyond event-based PM and other potential cognitive confounds (i.e., episodic memory, time estimation, and EF), in predicting insight into one’s own performance on instrumental activities of daily living (IADLs) among community-dwelling older adults.

A group of 88 nondemented, community-dwelling older adults completed performance-based measures of time- and event-based PM, episodic memory, time estimation, and EF, as well as IADL tasks followed by self-appraisals of their own IADL performance as indices of insight.

Time-based PM was moderately-to-strongly associated with insight, beyond event-based PM, time estimation, and episodic memory [F(1,83) = 11.58, p = .001, ηp2 = .122], as well as beyond EF and demographic covariates [F(1,79) = 10.72, p = .002, ηp2 = .119].Specifically, older adults who performed more poorly on a time-based PM task overestimated the efficiency of their own IADL performance to a greater extent.

Findings suggest that nondemented older adults with poorer time-based PM may be more prone to inaccurately appraising their functional abilities and that this vulnerability may not be adequately captured by traditional EF measures.

Higher white matter hyperintensity (WMH) volume is a marker of cardiovascular disease (CVD) risk. CVD risk factors increase risk for Alzheimer’s disease and related dementias (ADRD). Mexican Americans (MA) and individuals of other Hispanic/Latino heritages have higher risk for CVD and ADRD. However, knowledge of associations between WMH volume and cognition in these groups remains limited.

We conducted a cross-sectional study of associations between WMH volume and neuropsychological performance (attention/executive functioning, memory) in MA (n = 851) and non-Hispanic White (NHW; n = 747) adults in the Health and Aging Brain Study: Health Disparities.

The MA group (mean age = 63.72 ± 7.90 years; 66.3% female) had higher rates of consensus diagnoses of hypertension and diabetes, whereas the NHW group (mean age = 69.18 ± 8.65 years; 55.2% female) had higher rates of diagnosed CVD (ps < .01). WMH volumes were higher among individuals with CVD risk factors/conditions (ps < .01). There were differential associations between WMH and neuropsychological performance across ethnoracial groups (ps < .001), wherein associations were steeper in the NHW group than in the MA group. Lower educational level was associated with higher WMH volume in the NHW group (p < .001), but no association was seen in the MA group (p > .05).

Negative effects of pathological changes in the form of WMH on cognition may be less robust or consistent for MA adults than NHW adults. Furthermore, the impact of WMH on cognition in NHW adults may be mitigated by cognitive reserve related to educational attainment.

Although evidence supports the improved safety profile of direct oral anticoagulants (DOACs) over warfarin (WF), outcomes among elderly traumatic brain injury (TBI) patients on this regimen remain unclear. This study describes the association between anticoagulation status (DOAC vs. WF use) and the rates of occurrence of intracranial hemorrhage (ICH), hematoma progression, need for surgical intervention and mortality in elderly TBI cases.

This retrospective cohort study from 2014 to 2019 included all trauma patients > 65 years on either WF or DOACs at the time of injury. The primary outcome was the rate of ICH after TBI. Multivariable regression analysis identified independent predictors of functional dependency and mortality.

A total of 501 elderly TBI patients (mean age = 82 years old) were included. WF users had higher CT Marshall scores (p = 0.007), more severe TBI (GCS < 8) (p = 0.003) and higher rates of subdural hematomas compared to the DOAC group (p = 0.003). Patients on DOACs had lower rates of ICH (42% vs. 57%, p = 0.001) and hospitalization (30% vs. 41%, p = 0.013) and better Glasgow outcome scale-extended scores at hospital discharge (mean 6.98 vs. 6.41, p = 0.005). Multicompartment ICH (OR 2.30, p = 0.027) and longer hospitalization (OR 0.04, p < 0.001) were associated with higher functional dependency rates, while higher CT Marshall scores (OR 1.09, p < 0.001) and poorer baseline frailty status (OR 0.62, p = 0.026) predicted increased mortality risk.

Elderly TBI patients on DOACs have lower rates of ICH, lower need for hospitalization and better functional outcomes at discharge compared to those taking WF. These findings need further confirmation using prospective multicenter studies.

Identifying persons with HIV (PWH) at increased risk for Alzheimer’s disease (AD) is complicated because memory deficits are common in HIV-associated neurocognitive disorders (HAND) and a defining feature of amnestic mild cognitive impairment (aMCI; a precursor to AD). Recognition memory deficits may be useful in differentiating these etiologies. Therefore, neuroimaging correlates of different memory deficits (i.e., recall, recognition) and their longitudinal trajectories in PWH were examined.

We examined 92 PWH from the CHARTER Program, ages 45–68, without severe comorbid conditions, who received baseline structural MRI and baseline and longitudinal neuropsychological testing. Linear and logistic regression examined neuroanatomical correlates (i.e., cortical thickness and volumes of regions associated with HAND and/or AD) of memory performance at baseline and multilevel modeling examined neuroanatomical correlates of memory decline (average follow-up = 6.5 years).

At baseline, thinner pars opercularis cortex was associated with impaired recognition (p = 0.012; p = 0.060 after correcting for multiple comparisons). Worse delayed recall was associated with thinner pars opercularis (p = 0.001) and thinner rostral middle frontal cortex (p = 0.006) cross sectionally even after correcting for multiple comparisons. Delayed recall and recognition were not associated with medial temporal lobe (MTL), basal ganglia, or other prefrontal structures. Recognition impairment was variable over time, and there was little decline in delayed recall. Baseline MTL and prefrontal structures were not associated with delayed recall.

Episodic memory was associated with prefrontal structures, and MTL and prefrontal structures did not predict memory decline. There was relative stability in memory over time. Findings suggest that episodic memory is more related to frontal structures, rather than encroaching AD pathology, in middle-aged PWH. Additional research should clarify if recognition is useful clinically to differentiate aMCI and HAND.