Sex Differences in the Association between Metabolic Dysregulation and Cognitive Aging: The Health and Retirement Study

2021 ◽  
Author(s):  
Marianne Chanti-Ketterl ◽  
Rebecca C Stebbins ◽  
Hardeep K Obhi ◽  
Daniel W Belsky ◽  
Brenda L Plassman ◽  
...  
Keyword(s):  
Sex Differences ◽  
Cognitive Aging ◽  
Repeated Measures ◽  
Cognitive Status ◽  
Health And Retirement Study ◽  
Metabolic Factors ◽  
Hypertension Status ◽  
Metabolic Dysregulation ◽  
Diabetes Status ◽  
Retirement Study

Abstract Background Dysregulation of some metabolic factors increases the risk of dementia. It remains unclear if overall metabolic dysregulation, or only certain components, contribute to cognitive aging and if these associations are sex-specific. Methods Data from the 2006-2016 waves of the Health and Retirement Study (HRS) was used to analyze 7,103 participants aged 65+ at baseline (58% women). We created a metabolic-dysregulation risk score (MDRS) composed of blood pressure/hypertension status, HbA1c/diabetes status, total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and waist circumference, and assessed cognitive trajectories from repeated measures of the HRS-Telephone Interview for Cognitive Status (HRS-TICS) over 10 years of follow-up. Linear mixed-effects models estimated associations between MDRS or individual metabolic factors (biomarkers) with mean and change in HRS-TICS scores and assessed sex-modification of these associations. Results Participants with higher MDRSs had lower mean HRS-TICS scores, but there were no statistically significant differences in rate of decline. Sex-stratification showed this association was present for women only. MDRS biomarkers revealed heterogeneity in the strength and direction of associations with HRS-TICS. Lower HRS-TICS levels were associated with hypertension, higher HbA1c/diabetes, and lower HDL-C and TC; while faster rate of cognitive decline was associated with hypertension, higher HbA1c/diabetes and higher TC. Participants with higher HbA1c/diabetes presented worse cognitive trajectories. Sex-differences indicated women with higher HbA1c/diabetes to have lower HRS-TICS levels while hypertensive males presented better cognitive trajectory. Conclusions Our results demonstrate that metabolic dysregulation is more strongly associated with cognition in women compared to men, though sex-differences vary by individual biomarker.

Associations Between Midlife Functional Limitations and Self-Reported Health and Cognitive Status: Results from the 1998–2016 Health and Retirement Study

2021 ◽  
pp. 1-17
Author(s):  
Benson Wu ◽  
Mohammad Usama Toseef ◽  
Ariana M. Stickel ◽  
Hector M. González ◽  
Wassim Tarraf
Keyword(s):  
Cognitive Impairment ◽  
Physical Function ◽  
Cognitive Aging ◽  
Multinomial Logistic Regression ◽  
Functional Limitations ◽  
Later Life ◽  
Cognitive Status ◽  
Health And Retirement Study ◽  
Reported Health ◽  
Retirement Study

Background: Life-course approaches to identify and help improve modifiable risk factors, particularly in midlife, may mitigate cognitive aging. Objective: We examined how midlife self-rated physical functioning and health may predict cognitive health in older age. Methods: We used data from the Health and Retirement Study (1998–2016; unweighted-N = 4,685). We used survey multinomial logistic regression and latent growth curve models to examine how midlife (age 50–64 years) activities of daily living (ADL), physical function, and self-reported health affect cognitive trajectories and cognitive impairment not dementia (CIND) and dementia status 18 years later. Then, we tested for sex and racial/ethnic modifications. Results: After covariates-adjustment, worse instrumental ADL (IADL) functioning, mobility, and self-reported health were associated with both CIND and dementia. Hispanics were more likely to meet criteria for dementia than non-Hispanic Whites given increasing IADL impairment. Conclusion: Midlife health, activities limitations, and difficulties with mobility are predictive of dementia in later life. Hispanics may be more susceptible to dementia in the presence of midlife IADLs. Assessing midlife physical function and general health with brief questionnaires may be useful for predicting cognitive impairment and dementia in later life.

scholarly journals Same-Sex Couples and Cognitive Impairment: Evidence From the Health and Retirement Study

2020 ◽  
Author(s):  
Hui Liu ◽  
Ning Hsieh ◽  
Zhenmei Zhang ◽  
Yan Zhang ◽  
Kenneth M Langa
Keyword(s):  
Cognitive Impairment ◽  
The United States ◽  
Population Based ◽  
Cognitive Status ◽  
Health And Retirement Study ◽  
Sex Partners ◽  
Physical And Mental Health ◽  
Same Sex ◽  
Same Sex Couples ◽  
Retirement Study

Abstract Objectives We provide the first nationally representative population-based study of cognitive disparities among same-sex and different-sex couples in the United States. Methods We analyzed data from the Health and Retirement Study (2000–2016). The sample included 23,669 respondents (196 same-sex partners and 23,473 different-sex partners) aged 50 and older who contributed to 85,117 person-period records (496 from same-sex partners and 84,621 from different-sex partners). Cognitive impairment was assessed using the modified version of the Telephone Interview for Cognitive Status. Mixed-effects discrete-time hazard regression models were estimated to predict the odds of cognitive impairment. Results The estimated odds of cognitive impairment were 78% (p < .01) higher for same-sex partners than for different-sex partners. This disparity was mainly explained by differences in marital status and, to a much lesser extent, by differences in physical and mental health. Specifically, a significantly higher proportion of same-sex partners than different-sex partners were cohabiting rather than legally married (72.98% vs. 5.42% in the study sample), and cohabitors had a significantly higher risk of cognitive impairment than their married counterparts (odds ratio = 1.53, p < .001). Discussion The findings indicate that designing and implementing public policies and programs that work to eliminate societal homophobia, especially among older adults, is a critical step in reducing the elevated risk of cognitive impairment among older same-sex couples.

scholarly journals Marital Status and Dementia: Evidence from the Health and Retirement Study

2019 ◽  
Vol 75 (8) ◽  
pp. 1783-1795 ◽  
Author(s):  
Hui Liu ◽  
Zhenmei Zhang ◽  
Seung-won Choi ◽  
Kenneth M Langa
Keyword(s):  
Marital Status ◽  
The United States ◽  
Population Based ◽  
Cognitive Status ◽  
Baseline Survey ◽  
Health And Retirement Study ◽  
Related Factors ◽  
Never Married ◽  
Vulnerable Subpopulations ◽  
Retirement Study

Abstract Objectives We provide one of the first population-based studies of variation in dementia by marital status in the United States. Method We analyzed data from the Health and Retirement Study (2000–2014). The sample included 15,379 respondents (6,650 men and 8,729 women) aged 52 years and older in 2000 who showed no evidence of dementia at the baseline survey. Dementia was assessed using either the modified version of the Telephone Interview for Cognitive Status (TICS) or the proxy’s assessment. Discrete-time hazard regression models were estimated to predict odds of dementia. Results All unmarried groups, including the cohabiting, divorced/separated, widowed, and never married, had significantly higher odds of developing dementia over the study period than their married counterparts; economic resources and, to a lesser degree, health-related factors accounted for only part of the marital status variation in dementia. For divorced/separated and widowed respondents, the differences in the odds of dementia relative to married respondents were greater among men than among women. Discussion These findings will be helpful for health policy makers and practitioners who seek to better identify vulnerable subpopulations and to design effective intervention strategies to reduce dementia risk.

scholarly journals Validation of Self-Reported Cancer Diagnosis by Cognitive Status in the Health and Retirement Study

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 165-166
Author(s):  
Megan Mullins ◽  
Jasdeep Kler ◽  
Marissa Eastman ◽  
Mohammed Kabeto ◽  
Lauren Wallner ◽  
...  
Keyword(s):  
Older Adults ◽  
Cancer Diagnosis ◽  
Cognitive Status ◽  
Health And Retirement Study ◽  
Fee For Service ◽  
Incident Cancer ◽  
The Us ◽  
Sensitivity Specificity ◽  
The Relationship ◽  
Retirement Study

Abstract Exploring the relationship between cognition and cancer is increasingly important as the number of older adults in the US grows. The Health and Retirement Study (HRS) has longitudinal data on cognitive status and self-reported cancer diagnoses, but these self-reports have not been validated. Using HRS linked to Medicare Fee for Service (FFS) claims (1998-2016), we evaluated the validity of self-reported cancer diagnoses (excluding non-melanoma skin) against Medicare claims by respondent cognitive status. We included 8,280 Medicare-eligible HRS participants aged ≥67 with at least 90% FFS coverage. Cognitive status was ascertained from the HRS interview following the date of cancer diagnosis (or reference claim date) using the Langa-Weir method and was classified as normal, cognitive impairment no dementia (CIND), or dementia. We calculated the sensitivity, specificity, and Cohen's kappa for first incident malignant cancer diagnosis by cognitive status group. The majority (76.4%) of participants scored as cognitively normal, 9.6% had CIND, 14.0% had dementia and, overall, 1,478 had an incident cancer diagnosis. Among participants with normal cognition, sensitivity of self-reported cancer diagnosis was 70.2% and specificity was 99.8% (kappa=0.79). Among participants with CIND, sensitivity was 56.7% and specificity was 99.8% (kappa=0.66). Among participants with dementia, sensitivity was 53.0% and specificity was 99.6% (kappa=0.64). Results indicate poor validity of self-reported cancer diagnoses for older adults with CIND or dementia. These findings suggest researchers interested in cancer and cognition should use the HRS-Medicare linkage to ascertain cancer diagnosis from claims, and they highlight the importance of cognitive status in research among older adults.

scholarly journals MIDLIFE HEALTH FACTORS AND LATER-LIFE COGNITIVE DISEASE: RESULTS FROM THE 1998-2014 HEALTH AND RETIREMENT STUDY

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S950-S951
Author(s):  
Benson Wu ◽  
Mohammad Usama Toseef ◽  
Wassim Tarraf ◽  
Hector M González
Keyword(s):  
Public Health ◽  
Health Outcomes ◽  
Multinomial Logistic Regression ◽  
Later Life ◽  
Cognitive Status ◽  
Older Age ◽  
Fine Motor ◽  
Health And Retirement Study ◽  
Reported Health ◽  
Retirement Study

Abstract Understanding lifecourse determinants of older-age health outcomes is indispensable for resources planning and optimizing public health in light of continued gains in longevity in the US and worldwide. Data increasingly points to midlife health and modifiable risk factors as critical targets for improving older-age health outcomes and mitigating potential cognitive impairment and disease. We used 16-years of biennial data (1998-2014) from the Health and Retirement Study (unweighted-n=6,724), to examine how a comprehensive battery of midlife (age 50-64 years) health measures (disability, physical function, comorbid conditions, and self-reported health) affect cognitive status (using Langa-Weir criteria: Normal, Cognitively Impaired Not Dementia (CIND), and Dementia) and death 16-years later. Additionally, we test for racial/ethnic and gender modifications in the effects of these conditions on the outcomes of interest. We used survey multinomial logistic regression models adjusting for predisposing sociodemographic factors, health-enabling economic characteristics and health behaviors. Relative risk ratios (RRR) across all unadjusted models varied from 1.36-4.84 and 1.36-3.31 for those with dementia and who died in 2014 respectively, suggesting worse health outcomes in midlife are associated with higher dementia/mortality risk in later-life. After covariates-adjustment, comorbidities (RRR=1.15[1.04,1.27]) and Self-reported Health (RRR=1.36[1.22,1.52]) were associated with CIND, and attenuation was particularly pronounced for IADLS (RRR=3.15[2.25,4.43]) and Fine Motor Skills (RRR=1.94[1.46,2.57]) for individuals with dementia in 2014. Neither sex nor race/ethnicity modified these associations. Modifying the midlife health profile of US adults can yield important public health savings and reductions in structural and social health burdens through extenuating the prevalence of dementias and reducing excess mortality.

scholarly journals Longitudinal Daily Living Limitations and Cognitive Status: Results from the 1998-2016 Health and Retirement Study

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 897-897
Author(s):  
Benson Wu ◽  
Mohammad Usama Toseef ◽  
Wassim Tarraf ◽  
Ariana Stickel ◽  
Sonya Kaur ◽  
...  
Keyword(s):  
Activities Of Daily Living ◽  
Functional Impairment ◽  
Daily Living ◽  
Latent Class ◽  
Study Data ◽  
Cognitive Status ◽  
Health And Retirement Study ◽  
Middle Aged Adults ◽  
Health Burdens ◽  
Retirement Study

Abstract Data increasingly points to midlife health and modifiable risk factors as critical targets for improving older-age health outcomes and mitigating potential cognitive impairment and disease. We used biennial Health and Retirement Study data (1998-2016) collected on adults ages 50-64 years who did not meet criteria for dementia at baseline and who remained living by 2016 (unweighted-n=4,803). Cognitive status was defined using Langa-Weir criteria: Normal, Cognitively Impaired Not Dementia (CIND), and Dementia. We examined how 18-year patterns in activities of daily living (ADLs) and instrumental activities of daily living (IADLs) predicted cognitive status in 2016. We used latent class analysis to extract longitudinal phenotypes of activities limitations, followed by survey multinomial logistic regressions to examine their associations with cognitive status and test for race/ethnic modifications. We identified three groups of functional impairment: (1) gradually increasing (15.7%), (2) stable elevated (5.6%), and (3) minimal dysfunction (78.7%). After covariates adjustment, both the gradual and stable elevated impairment groups (vs. minimal) had substantially higher relative risk ratios (RRR) for dementia (RRR=5.71[3.89;8.39] and RRR=7.87[4.23,14.64]) and CIND (RRR=2.21 [1.69,2.88] and RRR=1.92[1.16;3.17]). We detected modifications by race/ethnicity such that Hispanics with stable elevated impairment had a higher probability of dementia compared to their White counterparts. The results varied for Blacks and did not significantly differ from Whites. Data-driven methods may improve our understanding of heterogeneous functional impairment patterns among late middle-aged adults and allow for tailored ADRD prevention strategies. Focused risk-based interventions can yield important public health savings and reductions in structural, social, and individual health burdens.

scholarly journals Cognitive Impairment and the Trajectory of Loneliness in Older Adulthood: Evidence from the Health and Retirement Study

2021 ◽  
pp. 089826432110195
Author(s):  
Ji Hyun Lee ◽  
Martina Luchetti ◽  
Damaris Aschwanden ◽  
Amanda A. Sesker ◽  
Jason E. Strickhouser ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Multilevel Modeling ◽  
Social Contact ◽  
Sociodemographic Factors ◽  
Cognitive Status ◽  
Health And Retirement Study ◽  
Older Adulthood ◽  
Retirement Study ◽  
Cognitive Impairment No Dementia ◽  
Social Loneliness

Objective: To examine whether the trajectory of facets of loneliness—emotional and social—varied by cognitive impairment status in older adulthood. Methods: Data came from the Health and Retirement Study 2008–2018 waves ( N = 15,352). Cognitive impairment was assessed using standard cutoffs for cognitive impairment no dementia (CIND) and dementia. The 11-item UCLA loneliness scale was used to measure emotional and social loneliness. Results: Using multilevel modeling, we found that CIND and dementia status were associated with higher overall, emotional, and social loneliness, controlling for physical health, social contact, and depressive symptoms. The trajectory of loneliness did not vary by cognitive status. There were modest variations by sociodemographic factors. Discussion: Persons with CIND and dementia experience heightened emotional and social loneliness, but cognitive impairment does not contribute to the worsening of loneliness. Older adults' social integration may be maintained early in cognitive impairment.

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