scholarly journals The Association Between Obesity and Long-Term Cognitive Performance in Middle-Aged and Older Adults

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 379-380
Author(s):  
Andrew Fiscella ◽  
Ross Andel
Keyword(s):  
United States ◽  
Older Adults ◽  
Executive Function ◽  
Cognitive Performance ◽  
Oldest Old ◽  
The United States ◽  
Normal Weight ◽  
Middle Aged ◽  
Global Cognition

Abstract Obesity is a growing epidemic in the United States and has been associated with negative health outcomes such as cardiovascular disease and diabetes. However, an obesity paradox has emerged which suggests that the effects of obesity may vary by age, with older adults potentially seeing a protective effect of obesity. This study examined the effects of overweight and obese status on cognitive performance at baseline and follow-up. It was hypothesized that obese middle-aged adults would perform worse than normal weight peers, but that reverse would be observed in older adults. Data from 701 participants in the Midlife in the United States study were included. Body mass index (BMI) and waist circumference were employed as measures of obesity. Z-scores for executive function, memory, and global cognition were used to quantify cognitive performance. While obese participants tended to perform worse on average than normal weight individuals there were no significant differences in performance between obese and normal weight participants in global cognition (p=.134), executive function (p=.164), or episodic memory (p=.708). Additionally, age did not moderate this relationship. However, there was a significant effect of education on all three domains. When stratified by education, participants with some college or higher, had a significant time*obesity*age interaction (F[3,328]=3.016, p<.05). For the oldest-old participants, executive function scores were higher for obese participants at follow-up compared to normal weight participants, but not at baseline. These findings suggest that level of education may serve as a form of cognitive reserve which compensates for deficits due to obesity.

Longitudinal associations between insomnia symptoms and all-cause mortality among middle-aged and older adults: A population-based cohort study

SLEEP ◽  
2022 ◽  
Author(s):  
Asos Mahmood ◽  
Meredith Ray ◽  
Kenneth D Ward ◽  
Aram Dobalian ◽  
Sang Nam Ahn
Keyword(s):  
Older Adults ◽  
The United States ◽  
Early Morning ◽  
Time Varying ◽  
Middle Aged ◽  
Insomnia Symptom ◽  
All Cause Mortality ◽  
Longitudinal Associations ◽  
Insomnia Symptoms

Abstract To date, there is no scientific consensus on whether insomnia symptoms increase mortality risk. We investigated longitudinal associations between time-varying insomnia symptoms (difficulty initiating sleep, difficulty maintaining sleep, early-morning awakening, and non-restorative sleep) and all-cause mortality among middle-aged and older adults during 14 years of follow-up. Data were obtained from 2004 through 2018 survey waves of the Health and Retirement Study in the United States for a population-representative sample of 15,511 respondents who were ≥50 years old in 2004. Respondents were interviewed biennially and followed through the end of the 2018 survey wave for the outcome. Marginal structural discrete-time survival analyses were employed to account for time-varying confounding and selection bias. Of the 15,511 cohort respondents (mean [±SD] age at baseline, 63.7 [±10.2] years; 56.0% females), 5,878 (31.9%) died during follow-up. At baseline (2004), 41.6% reported experiencing at least one insomnia symptom. Respondents who experienced one (HR=1.11; 95% CI: 1.03–1.20), two (HR=1.12; 95% CI: 1.01–1.23), three (HR=1.15; 95% CI: 1.05–1.27), or four (HR=1.32; 95% CI: 1.12–1.56) insomnia symptoms had on average a higher hazard of all-cause mortality, compared to those who were symptom-free. For each insomnia symptom, respondents who experienced difficulty initiating sleep (HR=1.12; 95% CI: 1.02–1.22), early-morning awakening (HR=1.09; 95% CI: 1.01–1.18), and nonrestorative sleep (HR=1.17; 95% CI: 1.09–1.26), had a higher hazard of all-cause mortality compared to those not experiencing the symptom. The findings demonstrate significant associations between insomnia symptoms and all-cause mortality, both on a cumulative scale and independently, except for difficulty maintaining sleep. Further research should investigate the underlying mechanisms linking insomnia symptoms and mortality.

scholarly journals Measuring (Non)Essentialist Beliefs About the Process of Aging

2020 ◽  
Author(s):  
David Weiss ◽  
Manfred Diehl
Keyword(s):  
United States ◽  
Older Adults ◽  
Measurement Invariance ◽  
Discriminant Validity ◽  
Age Groups ◽  
The United States ◽  
Cross Cultural ◽  
Middle Aged ◽  
Retest Reliability ◽  
Age Related

Abstract Objectives We validated an aging mindset measure that captures beliefs about the process of aging. Specifically, we introduce a brief 4-item and an extended 10-item measure assessing (non)essentialist beliefs about aging. Methods We report findings from one longitudinal and one cross-cultural study, including young, middle-aged, and older adults between 18 and 88 years. The studies established (retest) reliability and measurement invariance as well as convergent and discriminant validity of the measures. Results First, in a longitudinal study (N = 124, 50–84 years) including 4 measurement occasions, we showed that the 4-item scale assessing (non)essentialist beliefs about aging has good retest reliability and convergent as well as discriminant validity (e.g., awareness of age-related change). Second, in a large cross-cultural sample (N = 1,080, 18–82 years) of participants in the United States and Germany, we established an extended 10-item measure of (non)essentialist beliefs about aging, providing support for a 2-factor structure as well as measurement invariance across samples within and across countries (the United States and Germany), age groups (young, middle-aged, and older adults), as well as across men and women. Discussion Our results highlight the importance of distinguishing between fixed versus malleable aging beliefs in research on aging and life-span development.

Sign in / Sign up

Export Citation Format

Share Document