Biological aging in maltreated children followed up into middle adulthood

Methods for the assessment of biological age - A systematic review

Biological age has long been proposed to complement chronological age because it has the potential to provide a more accurate assessment of someone's ageing process and functional status. At present, there are several methods to determine an individual's biological age through the measurement of biomarkers of ageing. This review compares methods for assessing biological age in adults, analyses biomarkers of ageing, and determines the goals for which biological age can be calculated, in order to help determine a gold standard for measuring biological age. Articles were eligible if studies included a test battery and statistical method to calculate biological age. Literature research included the databases Medline, Embase, Cochrane Library, Web of Science and ClinicalTrials.gov. In total, 56 studies were included and the risk of bias in each of them was assessed. The most commonly used methods to assess biological age are Klemera and Doubal's method, principal component analysis, multiple linear regression, PhenoAge and Hochschild's method. Klemera and Doubal's method has proved the most reliable. Apart from using different statistical methods, the difference between the biological ageing scores lies in the choice of biomarkers of ageing, especially the inclusion of chronological age as a biomarker of ageing. Most of the included studies aimed to establish a new biological ageing score or compare biological age to different measurements of functionality of the human body. In conclusion, there is still no consensus on a gold standard and more research on this topic is necessary. Study protocol PROSPERO ID: CRD42021287548.

Racial/Ethnic Differences in Adverse Childhood Experiences and Health-Related Outcomes: A Scoping Review

Racial and ethnic differences have been observed across patterns of substance use and exposure to adverse childhood experiences (ACEs). The goal of this review was to summarize the current evidence on ACE and health outcomes across racial and ethnic groups in the United States. A scoping review of the literature following the Preferred Reporting Items for Systematic Reviews and Meta- Analysis for Scoping Review (PRISMA-ScR) guideline was performed. Using predetermined search terms and parameters, an electronic database search of peer-reviewed literature between 1997 and 2022 was performed. Forty-five articles met the inclusion and exclusion criteria. Thirteen articles focused on health behavior and education outcomes, fifteen reported on physical health outcomes, and eighteen reported on mental health outcomes. Relatively to mental health outcomes, race/ethnicity appeared to play a less significant role in the relationship between ACE and behavioral outcomes or physical health outcomes. There was stronger evidence that race/ethnicity may moderate relationships between ACE exposure and mental health outcomes. Across health behavior, physical health, and mental health domains, the evidence suggests that the relationship between ACE exposure and health outcomes is not uniform across different racial and ethnic groups. These findings highlight the need for future research to uncover how cultural, societal, and developmental factors interact to shape health in the context following exposure to childhood adversity.

Childhood Maltreatment and Biological Aging in Middle Adulthood: The Role of Psychiatric Symptoms

Background

Childhood maltreatment and psychiatric morbidity have each been associated with accelerated biological aging primarily through cross-sectional studies. Using data from a prospective longitudinal study of individuals with histories of childhood maltreatment and control participants followed into midlife, we tested 2 hypotheses examining whether 1) psychiatric symptoms mediate the relationship between childhood maltreatment and biological aging and 2) psychiatric symptoms of anxiety, depression, or posttraumatic stress disorder (PTSD) act in conjunction with childhood maltreatment to exacerbate the association of child maltreatment to aging.

Methods

Children (ages 0-11 years) with documented histories of maltreatment and demographically matched control children were followed into adulthood (N = 607) and interviewed over several waves of the study. Depression, anxiety, and PTSD symptoms were assessed at mean ages of 29 (interview 1) and 40 (interview 2) years. Biological age was measured from blood chemistries collected later (mean age = 41 years) using the Klemera-Doubal method. Hypotheses were tested using linear regressions and path analyses.

Results

Adults with documented histories of childhood maltreatment showed more symptoms of depression, PTSD, and anxiety at both interviews and more advanced biological aging, compared with control participants. PTSD symptoms at both interviews and depression and anxiety symptoms only at interview 2 predicted accelerated biological aging. There was no evidence of mediation; however, anxiety and depression moderated the relationship between childhood maltreatment and biological aging.

Conclusions

These new findings reveal the shorter- and longer-term longitudinal impact of PTSD on biological aging and the amplifying effect of anxiety and depression on the relationship between child maltreatment and biological aging.

Retirement Makes You Old? Causal Effect of Retirement on Biological Age

Retirement is a critical life event for older people. Health scholars have scrutinized the health effects of retirement, but its consequences on age-related diseases and mortality are unclear. We extend this body of research by integrating measurements of biological age, representing the physiological decline preceding disease onset. Using data from the UK Biobank and a fuzzy regression discontinuity design, we estimated the effects of retirement on two biomarker-based biological age measures. Results showed that retirement significantly increases biological age for those induced to retire by the State Pension eligibility by 0.871-2.503 years, depending on sex and specific biological age measurement. Given the emerging scientific discussion about direct interventions to biological age to achieve additional improvements in population health, the positive effect of retirement on biological age has important implications for an increase in the State Pension eligibility age and its potential consequences on population health, public health care policy, and older people's labor force participation. Overall, this study provides novel empirical evidence contributing to the question of what social factors make people old.

From childhood maltreatment to intimate partner violence perpetration: A prospective longitudinal examination of the roles of executive functioning and self-esteem

BACKGROUND

Previous research has found that childhood maltreatment predicts increased risk for violence and partner violence and there is some evidence for poorer executive functioning and low self-esteem. To date, there have been no longitudinal studies that have examined the extent to which executive functioning and self-esteem play a role in the relationship between child maltreatment and intimate partner violence (IPV) perpetration.

METHODS

This study aims to fill this gap by utilizing data from a prospective longitudinal study of children with documented court cases of abuse and neglect (ages 0-11 years) from a metropolitan county area in the Midwest (during the years 1967-1971) and demographically matched controls. Both maltreated individuals and matched controls were followed up and assessed over several waves of the study in young and middle adulthood. At mean age 39 years, inhibition and cognitive control were evaluated, while cognitive flexibility and nonverbal reasoning were assessed at mean age 41. Self-esteem was also assessed at mean age 41. Physical IPV perpetration was evaluated at age 47 using two different scoring strategies in separate models: the number of acts and variety of acts, ensuring avoidance of potential score skewness.

RESULTS

Childhood maltreatment predicted lower executive functioning and self-esteem, and both independently predicted intimate partner violence perpetration. Lower executive functioning and self-esteem mediated the relationship between childhood maltreatment and physical IPV perpetration in midlife, irrespective of the scoring method.

CONCLUSION

Findings suggest that executive functioning and self-esteem play a role in the cycle of violence. Implications and suggestions for future directions are discussed.

Does biological age mediate the relationship between childhood adversity and depression? Insights from the Detroit Neighborhood Health Study

The link between childhood adversity and adulthood depression is well-established; however, the underlying mechanisms are still being explored. Recent research suggests biological age may mediate the relationship between childhood adversity and depression in later life. This study examines if biological age mediates the relationship between childhood adversity and depression symptoms using an expanded set of biological age measures in an urban population-based cohort. Data from waves 1-3 of the Detroit Neighborhood Health Study (DNHS) were used in this analysis. Questions about abuse during childhood were coded to form a childhood adversity score similar to the Adverse Childhood Experience measure. Multiple dimensions of biological age, defined as latent variables, were considered, including systemic biological age (GrimAge, PhenoAge), epigenetic age (Horvath, SkinBlood), and immune age (cytomegalovirus, herpes simplex virus type 1, C-reactive protein, interleukin-6). Depression symptoms, modeled as a latent variable, were captured through the Patient Health Questionnaire-9 (PHQ-9). Models were adjusted for age, gender, race, parent education, and past depressive symptoms. Total and direct effects of childhood adversity on depression symptoms and indirect effects mediated by biological age were estimated. For total and direct effects, we observed a dose-dependent relationship between cumulative childhood adversity and depression symptoms, with emotional abuse being particularly influential. However, contrary to prior studies, in this sample, we found few direct effects of childhood adversity on biological age or biological age on depression symptoms and no evidence of mediation through the measures of biological age considered in this study. Further research is needed to understand how childhood maltreatment experiences are embodied to influence health and wellness.

Sexual abuse during childhood and all-cause mortality into middle adulthood: an Australian cohort study

OBJECTIVE

To compare mortality from all causes, internal causes (eg, cancers, circulatory and respiratory system diseases), and external causes (eg, suicide, accidents, assault) among people who were sexually abused during childhood with mortality for the general population.

DESIGN

Historical cohort study.

SETTING, PARTICIPANTS

2759 people (2201 women, 79.8%) who had experienced medically assessed contact sexual abuse in Victoria while aged 16 years or younger during 1964-1995, as recorded in Victorian Institute of Forensic Medicine records.

MAIN OUTCOME MEASURES

Mortality rate, based on linked National Death Index data (1980-2020), by five-year age group; sex- and age-standardised mortality ratios; comparison of rates with age- and sex-adjusted rates for the general Victorian population (incident rate ratio [IRR]).

RESULTS

We included 115 deaths of people under 50 years of age in our analysis (4.2% of people sexually abused as children; 79 women, 36 men); 56 deaths were attributed to external, 56 to internal causes (cause of death information missing in three cases). In each age group from 15-19 years, the mortality rates for people sexually abused as children were higher than for the general population; age- and sex-standardised all-cause mortality ratios were highest for people aged 25-29 years (men: 16.5; 95% confidence interval [CI], 11.0-22.0; women: 19.2; 95% CI, 14.3-24.2). The age- and sex-adjusted mortality rate for people sexually abused as children was higher than in the general population for all-cause (IRR, 8.25; 95% CI, 5.92-11.5), internal cause (IRR, 5.92; 95% CI, 3.89-9.01), and external cause deaths (IRR, 12.6; 95% CI, 9.61-16.6); the differences in external cause mortality were greater for people who had experienced penetrative (IRR, 14.9; 95% CI, 10.9-20.5) than for those who had experienced non-penetrative sexual abuse as children (IRR, 8.92; 95% CI, 5.35-14.9).

CONCLUSIONS

Sexual abuse during childhood is associated with higher mortality rates into mid-adulthood. Preventing child sexual abuse and intervening early to reduce the damage it inflicts is not only essential for the welfare of the child, but could also help reduce avoidable deaths later in life.

Associations between childhood maltreatment and physiological dysregulation in adulthood: Methodological decisions and implications

BACKGROUND

Childhood maltreatment is linked with health problems in adulthood. Theoretical models suggest that maltreatment leads to dysregulation in several bodily systems, and this has been corroborated using measures of physiological function (i.e., biomarkers). Methodological decisions involving the measurement of maltreatment and dimension reduction with respect to biomarkers (i.e., combining information across multiple measures) may influence research findings.

OBJECTIVE

The present study compares associations between childhood maltreatment and adult physiological dysregulation using multiple dimension reduction approaches and measures of maltreatment.

PARTICIPANTS AND SETTING

Participants were recruited, as children, to a prospective study of the correlates and consequences of childhood maltreatment. 253 participants were retained and provided biomarker data at midlife. Physiological dysregulation was operationalized with a conventional allostatic load approach and a novel statistical distance approach.

METHODS

Regression models were employed with allostatic load or statistical distance as the outcome and prospectively or retrospectively measured child maltreatment as the primary predictor.

RESULTS

When using allostatic load as the outcome, prospectively measured childhood maltreatment was positively associated with physiological dysregulation (b = 0.70, SE = 0.31, p = 0.02). When using statistical distance as the outcome, retrospectively measured childhood maltreatment was positively associated with physiological dysregulation (b = 0.69, SE = 0.19 p < 0.001).

CONCLUSIONS

We report a positive association between childhood maltreatment and physiological dysregulation at midlife. However, the significance and magnitude of effects varied with different maltreatment and physiological dysregulation measures. Further review of the methods used to study adult health conditions and their relation to childhood maltreatment is needed.

Accelerated biological aging and risk of depression and anxiety: evidence from 424,299 UK Biobank participants

Theory predicts that biological processes of aging may contribute to poor mental health in late life. To test this hypothesis, we evaluated prospective associations between biological age and incident depression and anxiety in 424,299 UK Biobank participants. We measured biological age from clinical traits using the KDM-BA and PhenoAge algorithms. At baseline, participants who were biologically older more often experienced depression/anxiety. During a median of 8.7 years of follow-up, participants with older biological age were at increased risk of incident depression/anxiety (5.9% increase per standard deviation [SD] of KDM-BA acceleration, 95% confidence intervals [CI]: 3.3%-8.5%; 11.3% increase per SD of PhenoAge acceleration, 95% CI: 9.%-13.0%). Biological-aging-associated risk of depression/anxiety was independent of and additive to genetic risk measured by genome-wide-association-study-based polygenic scores. Advanced biological aging may represent a potential risk factor for incident depression/anxiety in midlife and older adults and a potential target for risk assessment and intervention.

Psychological and biological mechanisms linking trauma with cardiovascular disease risk

Cardiovascular disease (CVD) is the leading cause of death and disability worldwide, and experiences of psychological trauma have been associated with subsequent CVD onset. Identifying key pathways connecting trauma with CVD has the potential to inform more targeted screening and intervention efforts to offset elevated cardiovascular risk. In this narrative review, we summarize the evidence for key psychological and biological mechanisms linking experiences of trauma with CVD risk. Additionally, we describe various methodologies for measuring these mechanisms in an effort to inform future research related to potential pathways. With regard to mechanisms involving posttraumatic psychopathology, the vast majority of research on psychological distress after trauma and CVD has focused on posttraumatic stress disorder (PTSD), even though posttraumatic psychopathology can manifest in other ways as well. Substantial evidence suggests that PTSD predicts the onset of a range of cardiovascular outcomes in trauma-exposed men and women, yet more research is needed to better understand posttraumatic psychopathology more comprehensively and how it may relate to CVD. Further, dysregulation of numerous biological systems may occur after trauma and in the presence of posttraumatic psychopathology; these processes of immune system dysregulation and elevated inflammation, oxidative stress, mitochondrial dysfunction, renin-angiotensin system dysregulation, and accelerated biological aging may all contribute to subsequent cardiovascular risk, although more research on these pathways in the context of traumatic stress is needed. Given that many of these mechanisms are closely intertwined, future research using a systems biology approach may prove fruitful for elucidating how processes unfold to contribute to CVD after trauma.