Cognitive Impairment In Older Adults Research Articles

The Triglycerides and Glucose Index Is Associated with Mild Cognitive Impairment in Older Adults

ABSTRACT Background It has been reported that insulin resistance is related to cognitive decline. The triglycerides and glucose (TyG) index, is a reliable and inexpensive surrogate test for detecting insulin resistance. Aims The goal of this study was to evaluate the association between the TyG index and the mild cognitive impairment (MCI) in older adults. Methods A total of 135 individuals, men and women aged 60 to 90 years, were enrolled in a case and control study. Individuals with a diagnosis of MCI (n = 65) were allocated into the case group and compared with individuals without MCI (n = 70) in the control group. Alcohol intake, diabetes duration ≥5 years, diagnoses of cerebrovascular disease, brain injury, folic acid deficiency, dementia, moderate or severe CI, major depressive disorders, and thyroid disease were exclusion criteria. Results Individuals in the case group exhibited higher waist circumference (97.9 ± 13.9 versus 93.5 ± 13.0, p = .001) and TyG index (5.0 ± 0.3 versus 4.1 ± 0.2, p = .001) than individuals in the control group. The TyG index ≥4.68 (OR 6.91; 95% CI 2.05–11.68) and waist circumference (OR 1.03; 95% CI 1.01–1.06) were positively associated with MCI, while education level (OR 0.44; 95% CI 0.30–0.61), occupation (OR 0.75; 95% CI 0.59–0.61), and exercise (OR 0.34; 95% CI 0.22–0.52) were inversely associated with MCI. After controlling for sex, age, waist circumference, education level, occupation, and exercise, a TyG index ≥4.68 remained significantly associated with MCI (OR 2.97; 95% CI 1.12–14.71). Conclusion The TyG index is independently associated with the presence of MCI in older people.

Association of waist-calf circumference ratio with incident cognitive impairment in older adults

The longitudinal relation of central fat and muscle mass with cognitive function remains unclear. We aimed to evaluate the relation of anthropometric measures, including BMI, waist circumference (WC), calf circumference (CC), and waist-calf circumference ratio (WCR), with incident cognitive impairment in older adults. A total of 3312 participants aged ≥65 y (mean: 81.8 y) who were free of cognitive impairment [the Chinese version of the Mini-Mental State Examination (MMSE) scores ≥24 points] in the Chinese Longitudinal Healthy Longevity Survey were included. The primary outcome was incident cognitive impairment, defined as MMSE scores <24 points at the exit visit. Secondary outcomes were incident cognitive decline, defined as a reduction of MMSE scores ≥3 points at the exit visit, and incident decline in different cognitive domains, defined as a reduction of MMSE scores in the domain ≥15% at the exit visit. During a median follow-up duration of 3.6 y, 565 (17.1%) participants developed incident cognitive impairment. Overall, with mutual adjustments, higher WC [≥89 cm (fourth quartile) compared with <75 cm (first quartile); adjusted HR: 1.56; 95% CI: 1.19, 2.04] and higher WCR [≥2.9 (fourth quartile) compared with <2.4 (first quartile); adjusted HR: 1.96; 95% CI: 1.52, 2.52] were significantly associated with a higher risk of cognitive impairment, and higher CC [≥34 cm (fourth quartile) compared with <28 cm (first quartile); adjusted HR: 0.44; 95% CI: 0.33, 0.59] was associated with a lower hazard of cognitive impairment. Similar results were found for the secondary outcomes. However, BMI was not significantly associated with the study outcomes. High WC and low CC were significantly associated with higher incident cognitive impairment in older adults. Moreover, WCR had a relatively stronger association with cognitive impairment compared with each circumference, suggesting maintaining both higher lean mass and lower central fat in older adults for the prevention of cognitive impairment.

Pathways linking hypertension and depression with mild cognitive impairment in older adults.

Pathways linking hypertension and depression with mild cognitive impairment in older adults.

Physical decline and cognitive impairment in frail hypertensive elders during COVID-19

BackgroundHypertension is common in older adults and its incidence increases with age. We investigated the correlation between physical and cognitive impairment in older adults with frailty and hypertension. MethodsWe recruited frail hypertensive older adults during the COVID-19 pandemic, between March 2021 and December 2021. Global cognitive function was assessed through the Montreal Cognitive Assessment (MoCA), physical frailty assessment was performed following the Fried criteria, and all patients underwent physical evaluation through 5-meter gait speed test. ResultsWe enrolled 203 frail hypertensive older adults and we found a significant correlation between MoCA score and gait speed test (r: 0.495; p<0.001) in our population. To evaluate the impact of comorbidities and other factors on our results, we applied a linear regression analysis with MoCA score as a dependent variable, observing a significant association with age, diabetes, chronic obstructive pulmonary disease (COPD), and gait speed test. ConclusionsOur study revealed for the first time a significant correlation between physical and cognitive impairment in frail hypertensive elderly subjects.

Association of Body Composition with Functional Capacity and Cognitive Function in Older Adults Living in Nursing Homes.

Older adults living in nursing homes have an increased risk of adverse outcomes. However, the role of body composition in vital health and quality of life parameters such as functional capacity and cognitive function is less studied in this group of older adults compared to community-dwelling counterparts. The aim of the present study was to examine the association of body composition with functional capacity and cognitive function in nursing home residents. Fifty-three older adults (82.8 ± 7.3 years) were enrolled in this study and they underwent body composition evaluation, functional capacity and cognitive function measurements. The results showed a high prevalence of obesity accompanied by functional capacity limitations and cognitive impairment in older adults living in nursing homes. Partial correlations, controlling for age, showed that body fat percentage was positively correlated with sit-to-stand-5 (r = 0.310, p = 0.025) and timed-up-and-go (r = 0.331, p = 0.017), and negatively correlated with handgrip strength test results (r = -0.431, p<0.001), whereas greater lean body mass was associated with better sit-to-stand-5 (r = -0.410, p = 0.003), handgrip strength (r=0.624, p<0.001) and cognitive function performance (r = 0.302, p = 0.037). These important associations reinforce the need to develop effective healthy lifestyle interventions targeting both lean mass and body fat to combat functional and cognitive decline in nursing home residents.

The Role of Glucagon-Like Peptide-1 Receptor Agonists (GLP-1 RA) in Diabetes-Related Neurodegenerative Diseases.

Recent clinical guidelines have emphasized the importance of screening for cognitive impairment in older adults with diabetes, however, there is still a lack of understanding about the drug therapy. Glucagon-like peptide 1 receptor agonists (GLP-1 RAs) are widely used in the treatment of type 2 diabetes and potential applications may include the treatment of obesity as well as the adjunctive treatment of type 1 diabetes mellitus in combination with insulin. Growing evidence suggests that GLP-1 RA has the potential to treat neurodegenerative diseases, particularly in diabetes-related Alzheimer’s disease (AD) and Parkinson’s disease (PD). Here, we review the molecular mechanisms of the neuroprotective effects of GLP-1 RA in diabetes-related degenerative diseases, including AD and PD, and their potential effects.

Digoxin Exhibits Neuroprotective Properties in a Rat Model of Dementia

Alzheimer's disease (AD) is by far the most common cause of cognitive impairment in older adults. Current treatments are entirely focused on the symptoms of AD. A complex etiology for AD has been proposed recently, in which AD leads in elevated levels of inflammation. We previously studied digoxin's involvement in the sporadic-AD intracerebroventricular (ICV)-streptozotocin (STZ) animal model due to its anti-inflammatory and neuroprotective characteristics. 18 adult sprague-dawley rats were split into three groups: control (n = 6), STZ + Saline (n = 6), and STZ + Digoxin (n = 6). Twelve AD-induced rats were split into two groups using stereotaxy five days after STZ injection (3mg/kg) into both lateral ventricles: one group got digoxin (0.1mg/kg/day, i.p.) for three weeks, while the other group received saline. Following treatment, each subject was subjected to a passive avoidance learning (PAL) test, followed by brain tissue harvesting. The levels of tumor necrosis factor-alpha (TNF-α) and choline acetyl transferase (ChAT) were measured in the brain, and neurons were counted using Cresyl violet staining in cornu ammonis-1 (CA1) and cornu ammonis-3 (CA3) cornu ammonis (CA3). ICV-STZ significantly shortened PAL latency, increased brain TNF-α levels, decreased brain ChAT activity, and decreased hippocampus neuron number. On the other hand, digoxin significantly reduced all of these STZ-induced deleterious effects. Digoxin significantly rescued rats from memory loss caused by ICV-STZ by decreasing hippocampal cell death, neuroinflammation, and cholinergic deficiency. These findings suggest that digoxin may be beneficial in treating cognitive impairment and Alzheimer's disease.

Higher fruit and vegetable variety associated with lower risk of cognitive impairment in Chinese community-dwelling older men: a 4-year cohort study.

Few studies have examined the variety in fruit and vegetable (FV) intake with cognitive impairment in older adults. This study examined the associations of variety in fruit, vegetable and combined FV with 4-year incident cognitive impairment in Chinese community-dwelling older adults. Data was derived from a cohort study among Chinese community-dwelling older adults aged ≥ 65years in Hong Kong. At baseline, a validated food frequency questionnaire was used to assess variety in fruit, vegetable and combined FV. Cognitive impairment was defined as a Community Screening Instrument of Dementia score of < 29.5 points and/or Mini-Mental State Examination score of < 27 points. Adjusted multiple logistic regression was performed to examine the associations. Results are presented as odds ratio (OR) and 95% confidence interval (CI). Of the 1518 participants [median age: 70years (IQR 68-74), 32.7% women] included at baseline, 300 men and 111 women were newly identified as cognitively impaired at the 4-year follow-up. In men, higher variety in vegetable (adjusted OR: 0.97, 95% CI 0.95-0.99, p = 0.029) and combined FV (adjusted OR: 0.98, 95% CI 0.96-0.98, p = 0.039) were significantly associated with a lower risk of cognitive impairment. Fruit variety was not associated with cognitive impairment. In women, there were no associations between variety in fruit, vegetable and combined FV with cognitive impairment in the adjusted model. Independent of FV quantity, higher variety in vegetable and combined FV were associated with lower risk of cognitive impairment in Chinese community-dwelling older adults, and these associations were only observed in men.

Normative Data for Verbal Fluency, Trail Making, and Rey–Osterrieth Complex Figure Tests on Monolingual Spanish-Speaking Older Adults

This study aimed to generate updated normative data for commonly used tests in neuropsychological assessment applied to older monolingual Spanish-speaking adults: Verbal fluency tests, the Trail Making Test (TMT), and the Rey-Osterrieth complex figure test (ROCF). To obtain normative data, 382 cognitively healthy 60- to 90-year-old Spanish monolingual participants from the Autonomous Community of Madrid (Spain) with 0-22years education were assessed using an overlapping interval strategy that involved cell and midpoint techniques, and that assessed the influence of age, education, and sex. Age and education were associated with the scores in the verbal fluency tests, TMT, and ROCF, whereas sex only significantly affected the TMT results. Age-adjusted scaled scores (SSA) based on percentile ranks were also converted into age-education scaled scores (SSAE) using a linear regression model. In addition, tables with the relevant adjustments for sex are provided for TMT-A and TMT-B. Thus, this study provides updated, uniform normative data for widely used neuropsychological tests on older Spanish adults. The normative procedure followed helps to make consistent comparisons when using these neuropsychological tests, which will improve the interpretation of the data obtained when these tools are employed, reducing the risk of misdiagnosing cognitive impairment in older adults.

Prevalence and incidence of cognitive impairment in older adults: associations with physical activity at leisure

Resumo Objetivo Descrever a prevalência e a incidência de deficit cognitivo em pessoas idosas, considerando a presença isolada e conjunta de atividades físicas no lazer, hipertensão arterial sistêmica e obesidade. Igualmente analisar a presença isolada e simultânea de inatividade física, obesidade, hipertensão e deficit cognitivo em dois tempos de medida. Métodos Foi realizado um estudo observacional, analítico e de coorte, baseado nos registros dos bancos de dados da linha de base (2008-2009) e do seguimento (2016-2017) do Estudo Fibra Campinas. Foram realizadas medidas de rastreio de demência, de autorrelato de horas semanais de atividades físicas de no lazer de diferentes intensidades, de hipertensão arterial e de status nutricional, com base no Índice de Massa Corporal (IMC). Resultados Participaram 394 pessoas idosas, 71,8% das quais eram mulheres; 74,4% tinham escolaridade &lt;4 anos; Midade =72,8±5,3 na linha de base e Midade =81,4±4,8 no seguimento. Na linha de base, as condições conjuntas mais prevalentes foram inatividade física e hipertensão (21,5%) e as menos prevalentes, inatividade física, obesidade, hipertensão e deficit cognitivo (0,6%). Foram observadas associações entre deficit cognitivo e inatividade física no seguimento. Idosos inativos na linha de base apresentaram maior razão de incidência de deficit cognitivo no seguimento, ajustada por sexo, idade, escolaridade, estado nutricional e hipertensão (RI=2,27; IC 95%: 1,49-3,45; p&lt;0,001). Conclusão A prevalência e a incidência de deficit cognitivo em idosos refletem a influência de baixo nível de atividade física no lazer na linha de base e no seguimento.

Latent brain state dynamics and cognitive flexibility in older adults.

Cognitive impairment in older adults is a rapidly growing public health concern as the elderly population dramatically grows worldwide. While it is generally assumed that cognitive deficits in older adults are associated with reduced brain flexibility, quantitative evidence has been lacking. Here, we investigate brain flexibility in healthy older adults (ages 60-85) using a novel Bayesian switching dynamical system algorithm and ultrafast temporal resolution (TR = 490 ms) whole-brain fMRI data during performance of a Sternberg working memory task. We identify latent brain states and characterize their dynamic temporal properties, including state transitions, associated with encoding, maintenance, and retrieval. Crucially, we demonstrate that brain inflexibility is associated with slower and more fragmented transitions between latent brain states, and that brain inflexibility mediates the relation between age and cognitive inflexibility. Our study provides a novel neurocomputational framework for investigating latent dynamic circuit processes underlying brain flexibility and cognition in the context of aging.

Gait monitoring for older adults during guided walking: An integrated assistive robot and wearable sensor approach.

An active lifestyle can mitigate physical decline and cognitive impairment in older adults. Regular walking exercises for older individuals result in enhanced balance and reduced risk of falling. In this article, we present a study on gait monitoring for older adults during walking using an integrated system encompassing an assistive robot and wearable sensors. The system fuses data from the robot onboard Red Green Blue plus Depth (RGB-D) sensor with inertial and pressure sensors embedded in shoe insoles, and estimates spatiotemporal gait parameters and dynamic margin of stability in real-time. Data collected with 24 participants at a community center reveal associations between gait parameters, physical performance (evaluated with the Short Physical Performance Battery), and cognitive ability (measured with the Montreal Cognitive Assessment). The results validate the feasibility of using such a portable system in out-of-the-lab conditions and will be helpful for designing future technology-enhanced exercise interventions to improve balance, mobility, and strength and potentially reduce falls in older adults.

Sleep disturbances, sleep-disordered breathing, and cognitive impairment in older adults: perioperative implications.

Sleep disturbances, sleep-disordered breathing, and cognitive impairment in older adults: perioperative implications.

Prevalência e incidência de deficit cognitivo em pessoas idosas: associações com atividade física no lazer

Abstract Objective Describing the prevalence and incidence of cognitive impairment in older adults, considering the isolated and combined presence of leisure-time physical activities, hypertension, and obesity. Methods An observational, analytical, cohort study was conducted based on the data records of baseline (2008-2009) and follow-up (2016-2017) from the Campinas FIBRA Study. Screening for dementia and self-report measures concerning the number of weekly hours of low and moderate levels of leisure-time physical activities, hypertension, and nutritional status based on the body mass index (BMI) were applied. Results There were 394 aged participants; 71.8% were female and 74.4% had less than four years of formal education. The mean age at the baseline was 72.8±5.3 years old, and at follow-up was 81.4±4.8. At baseline, the most prevalent concurrent conditions were physical inactivity and hypertension (21.5%), and the least prevalent were physical inactivity, obesity, hypertension and cognitive deficit (0.6%). Associations were observed between physical inactivity at follow-up, or for both measurement periods, and cognitive impairment at follow-up. Inactive participants at the baseline showed a higher incidence ratio of cognitive impairment at follow-up, adjusted for sex, age, education, nutritional status and hypertension (RI=2.27; 95%CI: 1.49-3.45; p&lt;0.001). Conclusion Prevalence and incidence of cognitive deficit mostly reflected the influence of low levels of leisure-time physical activity at baseline and follow-up.

Co-occurring Hearing Loss and Cognitive Decline in Older Adults: A Dual Group-Based Trajectory Modeling Approach.

Hearing loss and cognitive impairments are both highly prevalent neurological complications for older adults. While there is growing evidence to suggest that these two conditions are interrelated, little research has been conducted that directly examines the progression and developmental trajectories of these complications contemporaneously. The aim of the study is to identify the distinct trajectory profiles for hearing loss and cognitive function in an older population over a 10-year period. Through dual trajectory modeling, the interrelationship, co-occurring movements, and overlaps between these two complications were examined. We also investigated the influence of hearing aid ownership on cognitive function trajectories. We utilized longitudinal data from 1,445 participants in the Blue Mountains Hearing Study (aged 55+ years) involving repeated measures from a population-based survey with audiometric hearing assessments. Cognitive function was assessed using the Mini-Mental State Examination (MMSE). The group-based trajectory modeling (GBTM) identified three trajectory profiles for both hearing loss and cognitive function in two older age groups (55–69 years and 70+ years). The outputs from the dual trajectories models showed the conditional probability for “no hearing loss” trajectories to be around 90% more likely to have “high-normal” cognitive function, demonstrating co-occurring overlap. In contrast, for “moderate to severe hearing loss” trajectories, the conditional probability drops to 65% and 79% for the 55–69 age group and 70+ age group respectively. There was also an increasing probability for “cognitive decline” conditional on the severity of hearing loss with 6.7%, 7.5%, and 8.7% for no hearing loss, mild hearing loss, and moderate to severe hearing loss trajectory groups. While we did not find any statistically significant difference in the influence of hearing aid use in the cognitive function trajectories, there was a consistent greater representation of non-hearing aid users in the trajectories with poorer cognitive function. This study found GBTM to identify trajectories that were in agreement with our current understanding of hearing loss and cognitive impairment in older adults. This study also adds to the existing evidence-base as dual trajectories demonstrated co-occurrence in developmental changes in these two common neurological complications for the older population.

Effect of Heart Rate Reserve on Prefrontal Cortical Activation While Dual-Task Walking in Older Adults.

Hypertension is considered a risk factor for cardiovascular health and non-amnestic cognitive impairment in older adults. While heart rate reserve (HRR) has been shown to be a risk factor for hypertension, how impaired HRR in older adults can lead to cognitive impairment is still unclear. The objective of this study was to examine the effects of HRR on prefrontal cortical (PFC) activation under varying dual-task demands in older adults. Twenty-eight older adults (50–82 years of age) were included in this study and divided into higher (n = 14) and lower (n = 14) HRR groups. Participants engaged in the cognitive task which was the Modified Stroop Color Word Test (MSCWT) on a self-paced treadmill while walking. Participants with higher HRR demonstrated increased PFC activation in comparison to lower HRR, even after controlling for covariates in analysis. Furthermore, as cognitive task difficulty increased (from neutral to congruent to incongruent to switching), PFC activation increased. In addition, there was a significant interaction between tasks and HRR group, with older adults with higher HRR demonstrating increases in PFC activation, faster gait speed, and increased accuracy, relative to those with lower HRR, when going from neutral to switching tasks. These results provide evidence of a relationship between HRR and prefrontal cortical activation and cognitive and physical performance, suggesting that HRR may serve as a biomarker for cognitive health of an older adult with or without cardiovascular risk.

Short-term memory, attention, and temporal orientation as predictors of the cognitive impairment in older adults: A cross-sectional observational study.

Late-life cognitive decline ranges from the mildest cases of normal, age-related change to mild cognitive impairment to severe cases of dementia. Dementia is the largest global burden for the 21st century welfare and healthcare systems. The aim of this study was to analyze the neuropsychological constructs (temporal orientation (TO), spatial orientation (SO), fixation memory (FM), attention (A), calculation (C), short-term memory (STM), language (L), and praxis (P)), semantic fluency, level of functionality, and mood that reveal the greatest deficit in the different stages ranging from normal cognition (NC) to cognitive impairment in older adults in a primary healthcare setting. The study included 337 participants (102 men, 235 women), having a mean age of 74 ± 6 years. According to their scores on the Spanish version of the Mini-Mental State Examination (MEC-35), subjects were divided into 4 groups: no deterioration (ND) (score 32–35), subtle cognitive impairment (SCI) (score 28–31), level deterioration (LD) (score 24–27) and moderate deterioration (MD) (score 20–23). The ND group revealed significant differences in TO, STM, C, A, L, P, and S-T as compared to the other groups. The MD group (in all the neuropsychological constructs) and the ND and SCI groups showed significant differences on the Yesavage geriatric depression scale (GDS-15). All except the FM neuropsychological construct were part of the MEC-35 prediction model and all of the regression coefficients were significant for these variables in the model. Furthermore, the highest average percentage of relative deterioration occurs between LD and MD and the greatest deterioration is observed in the STM for all groups, including A and TO for the LD and MD groups. Based on our findings, community programs have been implemented that use cognitive stimulation to prevent cognitive decline and to maintain the neuropsychological constructs.

Stability and Variability of Indoor Room Transitions and Mild Cognitive Impairment in Older Adults

Indoor room transition is an underexplored real-world activity outcome. We estimated the stability and variability of indoor room transitions and their associations with mild cognitive impairment (MCI) in older adults. Older adults living-alone (n=159, age=78.3±8.8 years, 14% MCI) from the Oregon Center for Aging & Technology (ORCATECH) and the Minority Aging Research Study (MARS) were included. Room transitions were detected using passive infrared motion sensors in bathroom, bedroom, kitchen, and living room. The hourly number of room transitions was used to calculate the interdaily stability and intradaily variability of room transitions. MCI was operationalized by the Clinical Dementia Rating equaled 0.5. Generalized estimating equations models adjusted for demographics, health, and environmental factors revealed that older adults with MCI had a lower interdaily stability of room transitions than cognitive healthy peers (z=-2.06,p=0.03). A pervasive-sensing system deployed in homes can obtrusively measure room transition activities to inform cognitive health in older adults.

Physical Frailty and Cognitive Impairment in Older Nursing Home Residents: A Latent Class Analysis

Physical frailty (PF) has various clinical presentations and often co-occurs with cognitive impairment in older adults. In older adults in nursing homes (NHs), no research has examined the heterogeneous profile of PF and its association with cognitive impairment. Minimum Data Set 3.0 was used to identify older, long-stay, newly-admitted NH residents (2014-16; n=871,801). Latent class analysis was used to identify PF subgroups with FRAIL-NH items as indicators. Logistic regression was used to estimate the association between PF subgroups and cognitive impairment. The final model indicated three PF subgroups (prevalence): “mild PF” (7.6%), “moderate PF” (44.5%), and “severe PF” (47.9%). In all subgroups, residents had high probability of needing help with dressing. Older adults likely to belong to the “moderate PF” or the “severe PF” subgroups had high probabilities of requiring physical assistance to transfer between locations and inability to walk in a room. Additionally, residents likely to be in the “severe PF” subgroup had greater probability of bowel incontinence. Greater cognitive impairment was associated with increasingly higher odds to be in the “moderate PF” and “severe PF” subgroups: older residents with severe cognitive impairment were 20% more likely [adjusted odds ratio (aOR): 1.20, 95% confidence interval (CI): 1.17-1.23] and almost 7 times as likely (aOR: 6.86, 95%CI: 6.66-7.06) to belong to the “moderate PF” and “severe PF” subgroups, respectively. Findings provide new evidence for the interrelationship between PF and cognitive impairment in older NH residents and have implications for the development of interventions tailored to older residents’ specific PF experience.

Educational Mobility Through Marriage and Risk of Cognitive Impairment in Late Life

Objectives: Marriage represents a long-term intimate relationship involving high levels of interaction and shared resources. Education, as an inter-individual resource, may influence the health status of an individual and his/her spouse. The aim of this study was to assess the impact of educational mobility through marriage on the risk of cognitive impairment in older adults. Methods: Data were derived from the 2014 wave of the Chinese Longitudinal Healthy Longevity Survey. The final sample included 1,396 married men and 671 married women aged 65 years and older. Cognitive impairment was assessed using the Mini-Mental State Exam (MMSE). The gender-specific effect of educational mobility on the risk of cognitive impairment was tested by logistic regression analyses. Results: Older men who experienced downward educational mobility through marriage had a higher risk of cognitive impairment, when compared to their upwardly mobile counterparts. This association was not observed in women. Having more years of schooling protected both men and women from being cognitive impaired in late life. Discussion: These findings provide further evidence that downward socioeconomic mobility through marriage is associated with adverse health outcomes. Yet, the impact of spousal education on health must be understood through the lens of gender. Potential mechanisms that may link spousal education to cognition over the life course were discussed, including health literacy, health behaviors, and household resources.