Aging anxiety, loneliness, and depressive symptoms among middle-aged adults: The moderating role of ageism

Gerascophobia or Excessive Fear of Aging Scale (GEFAS): Development, validation, and exploration of psychometric properties of a brief instrument using classical testing theory and item response theory

BACKGROUND

Gerascophobia, or excessive fear of aging, is thought to be caused by a mixture of cognitive, experiential, and physiological factors acting on a person at particular time points. Measurement tools for evaluating geraschophobia remain insufficiently developed, despite this commonplace fear's distress.

OBJECTIVE

The objective of the current study was to develop and validate the Gerascophobia or Excessive Fear of Aging Scale (GEFAS) and analyze its psychometric properties.

METHODS

Three successive investigations were carried out with a total of 1594 participants. Exploratory and confirmatory factor analyses were conducted to evaluate the construct validity of the GEFAS. Convergent and discriminant validity was assessed by examining relationships with measures of depression, anxiety, stress, death anxiety, psychosocial illness, and life satisfaction. Multiple linear regression was used to investigate factors that predict fear of aging.

RESULTS

The GEFAS demonstrated high reliability (Cronbach alpha >0.8). Factor analysis supported a single-factor solution for the scale (fitness indices CFI, TLI, NNFI, NFI, RFI, and MFI all > 0.95; RMSEA=0.06. Significant positive correlations were found between fear of aging and depression (r = 0.270; p < 0.01), anxiety (r = 0.311; p < 0.01), stress (r = 0.285; p < 0.01), death anxiety (r = 0.600; p < 0.01), and psychosocial illness (r = 0.243; p < 0.01). A significant inverse correlation was observed with life satisfaction. Gender differences were also noted, with women exhibiting greater fear of aging than men (p < 0.01; d = 0.488).

CONCLUSION

The GEFAS fills a significant gap in the psychological/psychiatric literature as a useful tool for evaluating the fear of aging. The study concludes that the excessive fear of aging contributes to poor mental health.

Serum neurofilament light chain, markers of systemic inflammation and clinically relevant depressive symptoms in US adults

BACKGROUND

Neurofilament light chain (NFL), a biomarker of neuroaxonal damage, has been linked to inflammation and depressive disorders, albeit with inconsistent results. We aimed to evaluate the association between serum NFL concentration and clinically relevant depressive symptoms in the general population and to examine the potential involvement of systemic inflammation in this association.

METHODS

The data of 1881 adults aged 20-75 years were extracted from the National Health and Nutrition Examination Survey (NHANES) 2013-2014 cycle. Serum NFL levels were quantified using a highly sensitive immunoassay. Further, markers of systemic inflammation, including systemic immune inflammation index (SII), system inflammation response index (SIRI), and white blood cell (WBC) counts were calculated based on whole blood cell counts. Clinically relevant depressive symptoms were evaluated using the 9-item Patient Health Questionnaire (PHQ-9) with a cut-off score of 10.

RESULTS

After adjusting for potential confounders, we found that each one-unit increase in ln-transformed serum NFL concentration was significantly associated with a 1.37-fold increase in the risk of clinically relevant depressive symptoms (95 % confidence interval [CI]: 1.06, 1.77; p = 0.017). Serum NFL level was significantly related to increased SII (regression coefficient [β] = 0.04, 95%CI: 0.01, 0.08; p = 0.027), SIRI (β = 0.09, 95%CI: 0.05, 0.14; p < 0.001), and WBC (β = 0.05, 95%CI: 0.03, 0.07; p < 0.001), respectively. These significant associations were observed only in elderly participants.

LIMITATIONS

The cross-sectional study design is limited in causal inference.

CONCLUSIONS

Our findings indicate that serum NFL levels are related to an increased risk of clinically relevant depressive symptoms and higher levels of markers of systemic inflammation.

Ageist attitudes and psychological distress in older adults: The moderating role of reflective functioning

Ageist attitudes have been associated with various aspects of psychological functioning in older adults. According to Terror Management Theory, older adults may be seen as a reminder of human demise and death, and research has demonstrated links between ageist attitudes and compromised abilities to seek and maintain close personal relationships, which ward off awareness of one's mortality. Accordingly, the current work examined whether reflective functioning, or the ability to comprehend one's own and others' mental states, mitigates the negative psychological manifestations of ageist attitudes in older adults. Data was collected from 686 participants aged 60-94 (Mage = 72.64, SD = 6.28), who completed scales assessing ageist attitudes, reflective functioning, and psychological distress, as well as relevant socio-demographic information. Results indicated that ageist attitudes were linked with low levels of reflective functioning and enhanced psychological distress. Moreover, reflective functioning moderated the ageist attitudes-distress link, which was not significant in individuals reporting high levels of reflective functioning. This study provides insight into how the ability to comprehend others' mental states mitigates the adverse psychological effects of ageist attitudes and highlights the importance of examining relationship-enhancing personal factors within the context of negative ageing perceptions and psychological distress.

Estimation of the Global Disease Burden of Depression and Anxiety between 1990 and 2044: An Analysis of the Global Burden of Disease Study 2019

(1) Background: Depression and anxiety are the most common and severe mental disorders. This research estimated the prevalence and disease burden of depression and anxiety from 1990 to 2044. (2) Methods: Data on disease burden, population, and risk factors were identified and gathered from the Global Health Data Exchange database. The time trends, sex and age differences, key factors, and regional variations in and predictions of depression and anxiety were analyzed based on the age-standardized incidence rate, prevalence rate, and DALY rate. (3) Results: Our findings revealed that the burden of depression and anxiety was heavy. Specifically, the age-standardized DALY rate of depression started to decrease compared with trends related to anxiety disorders. Meanwhile, females bear a heavier burden for both depression and anxiety. Seniors and the middle-aged population carry the highest burden regarding mental disorders. Both high- and low-socio-demographic-index countries were found to be high-risk regions for depressive disorders. The disease burden attributed to childhood sexual abuse, bullying victimization, and intimate partner violence has increased since 1990. Finally, projections regarding depression and anxiety revealed geographic and age variations. (4) Conclusions: Public health researchers, officers, and organizations should take effective age-, sex-, and location-oriented measures.

The Effect of Genetic Variations in the Vitamin D Receptor Gene on the Course of Depressive Symptoms

BACKGROUND

Evidence on the association between single nucleotide polymorphisms (SNPs) in the vitamin D receptor (VDR) and depressive symptoms is inconclusive.

OBJECTIVES

The primary aim of the study was to investigate the association between SNPs in the VDR gene and depressive symptoms.

METHODS

In a sample of older adults from the Longitudinal Ageing Study Amsterdam (n = 922), depressive symptoms were assessed using the Centre for Epidemiological Studies Depression scale (CES-D scale) at baseline and after 3, 6, and 10 y of follow-up. Blood samples for SNP and serum 25-hydroxyvitamin D3 (25(OH)D3) determination were obtained at baseline. The association between 13 SNPs in the VDR gene and the course of depressive symptoms were evaluated using linear mixed models. The interaction between SNPs and serum 25(OH)D3 in relation to depressive symptoms was evaluated using multiple linear regression.

RESULTS

No SNPs were associated with the course of depressive symptoms. Significant interactions between serum 25(OH)D3 and SNPs in the VDR gene were found. Stratified analysis revealed that within the GG genotype strata, 10 nmol/L higher serum 25(OH)D3 was associated with 0.27 (95% CI: -0.50, -0.04) and 0.23 (95% CI: -0.48, 0.02) lower scores on the CES-D scale for Cdx-2 and 1b-G-886A, respectively. This association was not found in persons having the GA or AA genotype.

CONCLUSIONS

No SNPs are associated with the course of depressive symptoms. Stratified analysis shows that the effect of serum 25(OH)D3 concentrations on depressive symptoms is different among genotypes of Cdx-2 and 1b-G-886A. Future research should elucidate on the function of Cdx-2 and 1b-G-886A to describe their effect.

Loss of calcitonin gene-related peptide (αCGRP) and use of a vestibular challenge highlight balance deficiencies in aging mice

Aging impacts the vestibular system and contributes to imbalance. In fact, imbalance precedes changes in cognition in the elderly. However, research is limited in assessing aging mouse models that are deficient in crucial neuromodulators like Calcitonin Gene-Related Peptide (CGRP). We studied the loss of CGRP and its effects in the aging mouse, namely its effect on both static and dynamic imbalances. Postural sway and rotarod testing were performed before and after a vestibular challenge (VC) in the 129S wild type and the αCGRP (-/-) null mice. Four age groups were tested that correspond to young adulthood, late adulthood, middle age, and senescence in humans. Our results suggest wild type mice experience a decline in rotarod ability due to aging after they reach their prime performance at 6-10 months of age, while the αCGRP (-/-) null mice perform poorly on rotarod early in life but improve with age as they get older, potentially due to vestibular compensation. Our postural sway study suggests that a vestibular challenge can lead to significantly reduced CoP ellipse areas (freezing behaviors) in older mice, and this change occurs earlier in the αCGRP (-/-) null but requires future studies to evaluate anxiety effects. These results indicate that αCGRP is an important component of proper balance and that the loss of αCGRP can contribute to balance complications that may compound with aging.

The role of melatonin deficiency induced by pinealectomy on motor activity and anxiety responses in young adult, middle-aged and old rats

BACKGROUND

Aging affects anxiety levels in rats while the pineal gland, via its hormone melatonin, could modulate their inherited life "clock." The present study aimed to explore the impact of plasma melatonin deficiency on anxiety responses and the possible involvement of the hypothalamic-pituitary-adrenocortical (HPA) axis and heat shock proteins (Hsp) 70 and 90 in the frontal cortex (FC) and the hippocampus in young adult, middle-aged and elderly rats with pinealectomy.

RESULTS

Melatonin deficiency induced at different life stages did not affect the lifespan of rats. Pinealectomy abolished the circadian rhythm of motor activity, measured for 48 h in the actimeter, in young adult but not in middle-aged rats. Pinealectomy reduced the motor activity of the young adult rats during the dark phase and impaired the diurnal activity variations of old rats. The same generations (3- and 18 month-old rats with pinealectomy) had lower anxiety levels than the matched sham groups, measured in three tests: elevated-plus maze, light-dark test, and novelty-suppressed feeding test. While the activity of the HPA axis remained intact in young adult and middle-aged rats with melatonin deficiency, a high baseline corticosterone level and blunted stress-induced mechanism of its release were detected in the oldest rats. Age-associated reduced Hsp 70 and 90 levels in the FC but not in the hippocampus were detected. Pinealectomy diminished the expression of Hsp 70 in the FC of middle-aged rats compared to the matched sham rats.

CONCLUSIONS

Our results suggest that while melatonin hormonal dysfunction impaired the motor activity in the actimeter and emotional behavior in young adult and elderly rats, the underlying pathogenic mechanism in these generations might be different and needs further verification.

Late life depression and concepts of aging: an emerging paradigm

Late life depression (LLD) is an emerging challenge, and recognized as a significant barrier to long-term healthy aging. Viewed within the context of the medical/biological model, advances in brain sciences over the last several decades have led to a deeper understanding of the biology of LLD. These advances in current knowledge include the description of aging brain pathophysiology; the biology and biochemistry of neurotransmitters; the correspondence between changes in neurological structure, function, and neural network; the description of neural, hormonal and inflammatory biomarkers; and identification of typical phenotypic subtypes of LLD. Despite these advances, current treatment of LLD, which remains largely pharmacological with accompanying cognitive and behavioral interventions, has poor success rate for long-term remission among older people. A wider perspective, in keeping with several emerging aging concepts, is suggested as an alternative framework within which to view LLD. A growing body of research supports the important role in LLD of frailty, resilience, intrinsic capacity, and functional integrity. Similarly, important social determinants need to be addressed in the etiology of LLD, rooted largely in negative stereotypes of aging, with consequent repercussions of reduced participation and inclusion, growing social isolation, with loss of identity, meaning and hope. This perspective suggests the importance of a wider integrative conceptualization of depression, set against a background of emerging aging concepts.

'I feel old and have aging stereotypes'. Internalized aging stereotypes and older adults' mental health: the mediational role of loneliness

OBJECTIVES

The main objective of this study was to analyze the role of aging stereotype activation (when older adults with aging stereotypes begin to consider themselves as older persons) in the relationship between ageist stereotypes, depressive, anxiety, loneliness, and comorbid anxiety-depressive symptoms.

METHODS

Participants were 182 autonomous community-dwelling people between 60 and 88 (mean age = 72.30; SD = 5.53). Three path models were tested exploring the role of considering oneself as an older person as a moderator variable. Ageist stereotypes were included as the independent variable, loneliness as the mediating variable, and anxiety symptoms, depressive symptoms, and comorbid anxiety-depressive symptoms as dependent variables for each model.

RESULTS

The results suggest an influence of ageist stereotypes on anxiety, depressive, and comorbid anxiety-depressive symptoms only in older adults who consider themselves as older persons, and mediated by loneliness.

CONCLUSION

This study suggests that, when someone considers him or herself as an older person, ageist stereotypes activate loneliness feelings, and this activation is associated with psychological distress, including anxiety, depressive, and comorbid anxiety-depressive symptoms.

Mix of almond baru (Dipteryx alata Vog.) and goat whey modulated intestinal microbiota, improved memory and induced anxiolytic like behavior in aged rats

The objective was to evaluate the effects of the consumption of a mix of baru almond and goat whey on memory performance and anxiety parameters related to the intestinal health of rats treated during aging. The animals were divided into three groups and treated by gavage for 10 weeks (n = 10/each group): Control (CT) - distilled water; Baru almond (BA) - 2000 mg of baru/kg of body weight; and Baru + Whey (BW) - 2000 mg of baru + 2000 mg of goat milk whey/kg of body weight. Anxiety behavior, memory, brain fatty acid profile and fecal microbiota were measured. BA and BW realized less grooming, spent more time in the central area of the open field and the open arms, and realized more head dipping in the elevated plus maze. A higher rate of exploration of the new object in the short and long-term memory was observed in BA and BW. There was an increase in the deposition of MUFAs and PUFAs and oleic acid in the brain of BA and BW. Regarding spatial memory, BA and BW performed better, with an emphasis on BW. There was a beneficial modulation of the fecal microbiota with a reduction of the pathogenic genus Clostridia_UFC-014 in BA and BW and an increase in the abundance of metabolic pathways of interest in the brain-gut axis. Thus, consumption of the mix is efficient in beneficially altering the intestinal microbiota, improving memory and anxiolytic-like behavior in rats during aging.

The cognitive tenacity of self-directed ageism

Ageism refers to prejudice or discrimination based on a person's age. When ageism is directed at older people, it is unique in two ways: it is socially condoned in a manner that other types of prejudice are not, and the animus is eventually self-directed. Of central interest here is why ageism becomes self-directed in late adulthood, despite its potentially harmful personal costs. We present a cognitive model in which negative ageist beliefs become increasingly accessible and difficult to eliminate owing to broader developmental shifts in mentation. Given that these effects are contingent on our social environment, systemic changes in societal conceptions of age and aging are needed if we are to reduce vulnerability to self-directed ageism.

Short- and Medium-Term Effects of Ageism on Loneliness Experienced During the COVID-19 Pandemic

Loneliness, common in old age, may be partially attributed to ageism. The present study explored the short- and medium-term effect of ageism on loneliness experienced during the COVID-19 pandemic using prospective data derived from the Israeli sample of the Survey of Health, Aging and Retirement in Europe (SHARE) (N = 553). Ageism was measured before the COVID-19 outbreak and loneliness in the summer of 2020 and 2021 using a direct single question. We also tested for age differences in this association. In both the 2020 and 2021 models, ageism was related to increased loneliness. This association remained significant after adjusting for a host of demographic, health, and social variables. In the 2020 model, we also found that the positive association between ageism and loneliness was significant only in people aged 70+. We discussed the results with reference to the COVID-19 pandemic, which drew attention to two global social phenomena: loneliness and ageism.

The Relationship between Job Satisfaction and Depressive Symptoms among Chinese Adults Aged 35-60 Years: The Mediating Role of Subjective Well-Being and Life Satisfaction

The purpose of this study was to assess the serial multiple mediating effects of subjective well-being and life satisfaction between job satisfaction and depressive symptoms among Chinese adults aged 35-60 years. According to the 2018 China Family Panel Study (CFPS), we finally selected 10,609 respondents (5202 females, and 5407 males) aged 35-60 years old as samples for the study. Correlation analysis was carried out to examine the relationship among job satisfaction, subjective well-being, life satisfaction, and depressive symptoms. Linear regression models were established to analyze the relationship between job satisfaction and depressive symptoms. Serial multiple mediation analysis was conducted by the SPSS macro PROCESS program. The results suggested that job satisfaction was negatively correlated with depressive symptoms among Chinese adults aged 35-60 years. Subjective well-being and life satisfaction mediated the relationships between them, respectively. Furthermore, job satisfaction also had indirect impacts on depressive symptoms through the serial mediating effects of subjective well-being and life satisfaction. The findings revealed that increasing job satisfaction could decrease depressive symptoms through promoting subjective well-being and life satisfaction. The study may offer some meaningful implications for improving the mental health and reducing the risk of depressive symptoms among Chinese adults aged 35-60 years.

Informal caregivers' negative affect: The interplay of caregivers' resilience, aging anxiety and burden

OBJECTIVES

This study focused on the negative affect of informal caregivers of older adults. In a novel investigation, the interplay of aging anxiety, caregiving burden, and resilience as a protective factor was examined, suggesting that aging anxiety and caregiving burden are mediators for the link between resilience and negative affect.

METHODS

In a cross-sectional design, 191 Israeli informal caregivers of older adults (65+) participated in the study. They completed questionnaires that assessed demographic and caregiving characteristics, resilience, aging anxiety, caregiving burden, and negative affect.

RESULTS

The findings showed a serial mediation process in which higher resilience predicted lower caregiving burden, which subsequently predicted lower aging anxiety, which subsequently predicted lower negative affect. However, the indirect path from resilience to aging anxiety and negative affect was non-significant.

CONCLUSION

Based on this study's findings, the aging anxiety of informal caregivers of older adults should be professionally addressed in the early stages of caregiving because it contributes to the caregiving burden and negative affect. Additionally, resilience should be enhanced by psycho-social interventions tailored to address informal caregiver challenges that often induce caregiving burden and negative affect.

The Subjective Experience of Ageism: The Perceived Ageism Questionnaire (PAQ)

Ageism as perceived by older individuals has been recognized as a potential risk factor for physical and mental health. We aimed to develop a comprehensive scale that can quantify perceived ageism among aging individuals (55+), including both positive and negative stereotypes, prejudices, and discriminations. This effort resulted in an 8-item Perceived Ageism Questionnaire (PAQ-8), with good psychometric properties and a two-factor structure distinguishing a positive (3 items) and negative (5 items) subscale (Analysis 1; n = 500). This dimensionality was confirmed in a separate cross-validation sample (Analysis 2; n = 500). The subscales’ correlation patterns with individuals’ self-perceptions of aging and mental health variables (i.e., quality of life, mental well-being, depression, anxiety, loneliness and perceived stress) accorded with theoretical hypotheses and existing knowledge of the concept of ageism. The PAQ-8 can help to gather more standardized data of the level, role and impact of perceived ageism.