Midlife health in Britain and the United States: a comparison of two nationally representative cohorts.

BACKGROUND: Older adults in the USA have worse health and wider socioeconomic inequalities in health compared with those in Britain. Less is known about how health in the two countries compares in mid-life, a time of emerging health decline, including inequalities in health. METHODS: We compare measures of current regular smoking status, obesity, self-rated health, cholesterol, blood pressure and glycated haemoglobin using population-weighted modified Poisson regression in the 1970 British Cohort Study (BCS70) in Britain (N = 9665) and the National Longitudinal Study of Adolescent to Adult Health (Add Health) in the USA (N = 12 300), when cohort members were aged 34-46 and 33-43, respectively. We test whether associations vary by early- and mid-life socioeconomic position. RESULTS: US adults had higher levels of obesity, high blood pressure and high cholesterol. Prevalence of poor self-rated health and current regular smoking was worse in Britain. We found smaller socioeconomic inequalities in mid-life health in Britain compared with the USA. For some outcomes (e.g. smoking), the most socioeconomically advantaged group in the USA was healthier than the equivalent group in Britain. For other outcomes (hypertension and cholesterol), the most advantaged US group fared equal to or worse than the most disadvantaged groups in Britain. CONCLUSIONS: US adults have worse cardiometabolic health than British counterparts, even in early mid-life. The smaller socioeconomic inequalities and better overall health in Britain may reflect differences in access to health care, welfare systems or other environmental risk factors.

Mediators of Functional Disability at Mid- and Late-Life.

As the number and proportion of older adults living in the U.S. increases, growing evidence shows that people are entering late life with more functional disability than in previous generations. Using data from the 2020 Behavioral Risk Factor Surveillance System survey, we sought to identify the contributions of demographic variables and health conditions to functional disability. Specifically, we tested the associations among age, sex, race, chronic physical health conditions, depression, and functional ability among 243,693 adults, ages 45 years and older. Model testing, implemented in AMOS 29.0.0, resulted in an acceptable fit of the model to the data, Χ2 (DF = 18, N = 243,693) = 19,512.64, p < .001; CFI = 0.909; TLI = 0.774; RMSEA = 0.066; R 2 Function = .267. The findings from the present study replicate previous research that age, sex, and racial background differences influence functional disability. We extend the literature to examine physical and emotional health as potential pathways to intervene in midlife.

Association of Hormonal Exposures With Grip Strength in Women >45 Years: Data From the CONSTANCES Cohort Study.

Context: Although biological findings show that estrogens are beneficial for muscular mass maintenance and bone resorption inhibition, the association of hormonal exposure with physical performance are controversial. Objective: We investigated the association of reproductive history and exogenous hormone use with hand-grip strength (GS) in women. Methods: Using the data from the CONSTANCES French prospective population-based cohort study, we ran linear mixed models to investigate the association of reproductive history and exogenous hormones use with maximal GS in 37 976 women aged 45 to 69 years recruited between 2012 and 2020. We used multiple imputation by chained equations to control missing values and corrections for multiple testing. Results: The mean age of women was 57.2 years. Mean GS was 26.6 kg. After adjustment for age and confounders, GS increased with age at menarche (ß+1 year = 0.14; 95% CI, 0.10-0.17) and duration of breastfeeding (ß for ≥10 months vs <5 months = 0.39; 95% CI, 0.20-0.59; P for linear trend <.01). Compared to nonmenopausal women, postmenopausal women had significantly lower GS (ß = -0.78; 95% CI, -0.98 to -0.58). GS was negatively associated with hormone therapy (HT) past use (ß = -0.25; 95% CI, -0.42 to -0.07). Conclusion: Our results suggested that menopausal transition was strongly associated with lower GS. However, despite our hypothesis, increased age at menarche and duration of breastfeeding were associated with higher GS and HT past users presented lower GS than HT never users. These findings could help identify women at high risk of poor physical performance.

Transgender patients and gender-affirming hormone therapy through the mid-life.

The menopause transition and post-menopause period marks a time of dynamic physiological and hormonal change. Cisgender women commonly experience vasomotor symptoms, genitourinary symptoms, and changes in bone health. The transgender population, including those assigned female at birth (AFAB) and those assigned male at birth (AMAB), has been understudied in terms of experiences through the menopause transition and midlife. Additionally, there is no formal recommendation or guidance on continuation of gender-affirming hormone therapy (GAHT) through midlife. While gender-affirming therapies for transgender patients are well defined and supported by organizational guidelines, including from the World Professional Association for TGD Health (WPATH) (Standards of Care 8, SOC8) and from the Endocrine Society (2017), evidence on continuation of therapy and dose adjustments into mid-life are lacking. Data from a few large cohort studies and small cross-sectional studies suggest increased risk of venous thromboembolism (VTE), stroke and myocardial infarction in those AMAB on GAHT. For those AFAB on testosterone therapy, risks of cardiovascular disease and stroke and to bone health are not well defined, given inconsistent findings from large cohort studies. Currently, the decision to continue GAHT for transgender patients is guided by patient preference along with clinician guidance. Further research is warranted regarding risks of continuing GAHT into mid-life for both AMAB and AFAB patients. Given the significant benefit of GAHT in this population, however, this data would be most helpful for counseling on risks along with appropriate monitoring and prevention for related morbidities during mid-life in the setting of GAHT use.

Rising premature menopause and variations by education level in India.

The proportion of women experiencing premature menopause is on the rise in India, particularly in the age groups of 30-39 years. Consequently, there is a need to understand the factors influencing the prevalence of premature menopausal status among women. Our study uses the data from 180,743 women gathered during the latest Indian version of the Demography Health Survey (National Family Health Survey-5). Our results suggest that close to 5% of women in rural areas and 3% of women in urban areas experience premature menopause, and this figure varies across Indian States. The regression results show that surgical menopause, lower levels of education, poorer wealth index, rural residence, female sterilization, and insurance coverage are key drivers of premature menopause. One of the striking factors is that the prevalence of premature menopause among those with the lowest levels of education (6.85%) is around seven times higher than those with the highest level of education (0.94%). We conducted a decomposition analysis to delve into the factors contributing to this inequality. The results show that undergoing a hysterectomy (surgical menopause) account for 73% of the gap in premature menopausal rates between women with the lowest and highest levels of education. This indicates that women with poor education are more likely to undergo hysterectomy at a younger age. This finding warrants further exploration as we would expect that women from lower socio-economic background would have limited access to surgical care, however, our results suggest otherwise. This perhaps indicates a lack of awareness, lack of alternative treatment options, and over-reliance on surgical care while neglecting conservative management. Our results have implications for addressing the diverse needs of the increasing number of women in their post-menopause phase and for focusing on conservative treatment options for these women.

Resiliency and Barriers to Successful Aging Among Middle-Aged Mexican Immigrants Residing in a Rural Agricultural Community.

OBJECTIVES: The Latino population is one of the largest, most diverse, and fastest-growing demographic groups in the United States. Although Latinos enjoy longer life spans and reduced mortality risk relative to non-Hispanic Whites, they have higher rates of chronic health conditions such as diabetes and dementia and live more of their older years with poor health and disability. Such inequities point to the need for this research focused on examining resiliency strategies and barriers to successful aging among various U.S. Latino subgroups. METHODS: This qualitative study used thematic content analysis to examine resiliency strategies and barriers to successful aging among Mexican immigrant women (n = 40) residing in an underserved agricultural community and entering mid-life (mean = 49 years old). RESULTS: With regards to barriers to successful aging, 3 themes emerged: (1) stressful lifestyle in the United States compared to the participants' home countries; (2) stress from expectations at home; and (3) stress due to work and the various components around work. The following 4 resiliency strategies emerged: (1) family as a motivation for moving forward in life and focusing on the success of children; (2) having a positive mindset; (3) praying to God for strength to overcome obstacles; and (4) self-care. DISCUSSION: Despite experiencing barriers to successful aging, participants practice various resiliency strategies to age successfully. Because many of the barriers identified are related to poverty-related stressors, systemic solutions addressing the social determinants of health are needed.

Diet quality from mid to late life and its association with physical frailty in late life in a cohort of Chinese adults.

BACKGROUND: It is unclear if improving diet quality after midlife could reduce the risk of physical frailty at late life. We aimed to associate changes in diet quality after midlife with physical frailty at late life. METHODS: Diet quality in 12,580 participants from the Singapore Chinese Health Study was assessed with the Dietary Approaches to Stop Hypertension (DASH) scores at baseline (1993-1998; mean age 53 years) and follow-up 3 (2014-2016; mean age 73 years). Physical frailty was assessed using the modified Cardiovascular Health Study phenotype at follow-up 3. Multivariable logistic regressions examined associations between DASH scores and physical frailty. RESULTS: Comparing participants in extreme quartiles of DASH scores, the odds ratios (OR) [95% confidence interval (CI)] for physical frailty were 0.85 (0.73,0.99) at baseline and 0.49 (0.41, 0.58) at follow-up 3. Compared to participants with consistently low DASH scores, participants with consistently high scores (OR 0.74, 95% CI: 0.59, 0.94) and those with > 10% increase in scores (OR 0.78, 95% CI: 0.64, 0.95) had lower odds of frailty. Compared to those in the lowest DASH tertiles at both time-points, significantly lower odds of physical frailty were observed in those who were in the highest DASH tertiles at both time points [0.59 (0.48, 0.73)], and in those who improved their scores from the lowest [0.68 (0.51, 0.91)] or second tertile at baseline [0.61 (0.48, 0.76)] to the highest tertile at follow-up 3. CONCLUSIONS: Maintaining a high diet quality or a substantial improvement in diet quality after midlife could lower the risk of physical frailty at late life.

Social relationships, amyloid burden, and dementia: The ARIC-PET study.

INTRODUCTION: This study aimed to assess whether social relationships in mid-life reduce the risk of dementia related to amyloid burden. METHODS: Participants in the Atherosclerosis Risk in Communities (ARIC) study were assessed for social support and isolation (visit 2; 1990-1992). A composite measure, "social relationships," was generated. Brain amyloid was evaluated with florbetapir positron emission tomography (PET); (visit 5; 2012-2014). Incident dementia cases were identified following visit 5 through 2019 using ongoing surveillance. Relative contributions of mid-life social relationships and elevated brain amyloid to incident dementia were evaluated with Cox regression models. RESULTS: Among 310 participants without dementia, strong mid-life social relationships were associated independently with lower dementia risk. Elevated late-life brain amyloid was associated with greater dementia risk. DISCUSSION: Although mid-life social relationships did not moderate the relationship between amyloid burden and dementia, these findings affirm the importance of strong social relationships as a potentially protective factor against dementia.

Interventions Based on Behavior Change Techniques to Encourage Physical Activity or Decrease Sedentary Behavior in Community-Dwelling Adults Aged 50-70: Systematic Review With Intervention Component Analysis.

Increasing physical activity (PA) and/or decreasing sedentary behaviors is important in the delay and prevention of long-term conditions. PA can help maintain function and independence and decrease the need for hospitalization/institutionalization. Activity rates often decline in later life resulting in a need for interventions that encourage uptake and adherence through the use of Behavior Change Techniques (BCTs). We conducted a systematic review of the evidence for interventions that included BCTs in community-dwelling adults with a mean age of 50-70. The review followed PRISMA guidelines. The interventions were psychosocial, nonpharmacological, and noninvasive interventions utilizing components based on BCTs that evaluated change in PA and/or sedentary behavior. Intervention Component Analysis (ICA) was used to synthesize effectiveness of intervention components. Twelve randomized controlled trials were included in this review. The mean sample age was 50-64. Thirteen BCTs were used across all studies, and the most commonly used techniques were goals and planning, feedback and monitoring, and natural consequences. Seven intervention components linked with BCTs were found: personalized goal setting, tailored feedback from facilitators, on-site and postintervention support, education materials and resources, reinforcing change on behavior and attitudes, self-reported monitoring, and social connectedness. All components, except for social connectedness, were associated with improved health behavior and PA levels. The interventions that use BCTs have incorporated strategies that reinforce change in behavior and attitudes toward PA.

Association of midlife body-weight variability and cycles with earlier dementia onset: a nationwide cohort study.

BACKGROUND: Given the rising awareness of health-related lifestyle modifications, the impact of changes in body weight (BW) on cognitive function and dementia generates significant concern. This study aimed to investigate the association between BW changes and dementia in a middle-aged Korean population. METHODS: A retrospective, population-based longitudinal study was conducted utilizing data from the National Health Insurance Service (NHIS) database. Participants aged 40 years or older in 2011 who underwent at least five health checkups between 2002 and 2011 were followed-up for dementia until 2020. A total of 3,635,988 dementia-free Korean aged < 65 at baseline were examined. We analyzed the association between BW variability independent of the mean (VIM) with BW cycle, defined as either an upward or a downward direction of BW, and the risk of incident dementia. RESULTS: The results showed an increased risk of dementia in the highest quartile of VIM quartile (hazard ratio [HR] 1.52, 95% confidence interval [CI] 1.47-1.58) compared to the lowest quartile of VIM. Additionally, the results showed an even higher increased risk of dementia in the highest BW cycle (≥ 2 cycles of 10% BW = HR 2.00, 95% CI 1.74-1.29). Notably, the combined concept of VIM with BW cycle showed an even higher dementia risk (highest quartile of VIM with ≥ 2 cycles of 10% BW = HR 2.37, 95% CI 2.05-2.74) compared to the baseline group (lowest quartile of VIM with < 3% BW cycle). CONCLUSIONS: The present study highlights the importance of considering BW changes with BW variability along with the BW cycle to assess dementia risk in detail, providing valuable insights for preventive strategies.

Associations Between Mid-Life Psychosocial Measures and Estimated Late Life Amyloid Burden: The Atherosclerosis Risk in Communities (ARIC)-PET Study.

Background: Psychosocial factors are modifiable risk factors for Alzheimer's disease (AD). One mechanism linking psychosocial factors to AD risk may be through biological measures of brain amyloid; however, this association has not been widely studied. Objective: To determine if mid-life measures of social support and social isolation in the Atherosclerosis Risk in Communities (ARIC) Study cohort are associated with late life brain amyloid burden, measured using florbetapir positron emission tomography (PET). Methods: Measures of social support and social isolation were assessed in ARIC participants (visit 2: 1990-1992). Brain amyloid was evaluated with florbetapir PET standardized uptake value ratios (SUVRs; visit 5: 2012-2014). Results: Among 316 participants without dementia, participants with intermediate (odds ratio (OR), 0.47; 95% CI, 0.25-0.88), or low social support (OR, 0.43; 95% CI, 0.22-0.83) in mid-life were less likely to have elevated amyloid SUVRs, relative to participants with high social support. Participants with moderate risk for social isolation in mid-life (OR, 0.32; 95% CI, 0.14-0.74) were less likely to have elevated amyloid burden than participants at low risk for social isolation. These associations were not significantly modified by sex or race. Conclusions: Lower social support and moderate risk of social isolation in mid-life were associated with lower odds of elevated amyloid SUVR in late life, compared to participants with greater mid-life psychosocial measures. Future longitudinal studies evaluating mid-life psychosocial factors, in relation to brain amyloid as well as other health outcomes, will strengthen our understanding of the role of these factors throughout the lifetime.

Health Care Is Not Enough to Prevent Dementia.

With an aging population, an increase in cases of Alzheimer's disease and dementia worldwide poses a significant health burden. While we hope for a cure, preventing dementia by reducing risks is important for global population health. Prevention strategies are difficult to implement when facing inequality across the world for access to healthy lifestyles. An approach that centers on individual responsibility and health professional interventions for targeted groups may risk missing the policy and environmental drivers of change. Barriers and enablers need to be explored and interventions are needed at individual, structural and social levels to normalize mid-life risk reduction.

Women's childbearing histories and their alcohol use at midlife.

There has been increased alcohol use among mid-life women in recent decades. Given the association between alcohol use and childbearing earlier in life and the centrality of childbearing for other aspects of mid-life women's health, we examined how multiple components of childbearing histories were associated with mid-life alcohol use. Our analysis included 3,826 women from the National Longitudinal Survey of Youth 1979 (NLSY79). We estimated how nine components of childbearing were associated with women's alcohol use at age 50. We investigated these components independently and also created six childbearing profiles using Mixed-Mode Latent Class Analysis (MM-LCA). The most alcohol was consumed by women without any childbirths, with older ages at first birth, with low parity, and with the same or fewer births than expected. Women with older ages at first and last birth and more childbirths were less likely to abstain from alcohol compared to women with younger ages at first and last birth and fewer childbirths. Our MM-LCA demonstrated that women with multiple childbirths over a long period of time consumed the least alcohol compared to other groups. Binge drinking at mid-life was generally not associated with childbearing histories in our models. In summary, childbearing histories mattered for women's drinking behaviors at mid-life. Given that an increasing number of women do not have children, the age at first birth continues to trend older, and parity is decreasing, we may expect mid-life women's alcohol use to continue to increase in line with these observed fertility trends.

Mid-life adherence to the Dietary Approaches to Stop Hypertension (DASH) diet and late-life subjective cognitive complaints in women.

INTRODUCTION: Evidence is limited on the role of mid-life Dietary Approaches to Stop Hypertension (DASH) diet in late-life subjective cognitive complaints (SCCs). METHODS: We included 5116 women (mean age in 1985-1991: 46 years) from the New York University Women's Health Study. SCCs were assessed from 2018 to 2020 (mean age: 79 years) by a 6-item questionnaire. RESULTS: Compared to women in the bottom quartile of the DASH scores, the odds ratio (OR) for having two or more SCCs was 0.83 (95% confidence interval: 0.70-0.99) for women in the top quartile of DASH scores at baseline (P for trend = 0.019). The association was similar with multiple imputation and inverse probability weighting to account for potential selection bias. The inverse association was stronger in women without a history of cancer (P for interaction = 0.003). DISCUSSION: Greater adherence to the DASH diet in mid-life was associated with lower prevalence of late-life SCCs in women.

Patient patients: middle-aged British Pakistani women and the intuition of limits to care.

This paper examines the affective inequalities underpinning the extensive responsibilities of care that are shouldered by chronically ill -middle-aged British Pakistani women. In the context of ethnic health inequalities, chronic illness and premature ageing are ubiquitous. Further, mid-life generates gendered pinchpoints in the dynamics of care. The paper draws on extended conversations with women over seven/eight years and tracks their unsettled perspectives on sabar (patient endurance). Middle-aged women described how, over the long haul of living alongside chronic illness, they intuited that they must place some limits on caring for others, and that care required self-care - not in a biomedical sense, but in the sense of attention to their own bodily and relational needs. The paper extends anthropological critiques of Levinas's philosophy of infinite responsibilities to care, tracking how changes at several temporal scales - the life course, intergenerational re-negotiations - affect care. While social transformations of gender, and the proliferation of neoliberal discourses on self-care do affect the traction of normative notions of selfless care for others, the paper locates women's changing perspectives on sabar primarily in the provocations of everyday life.

Women in mid-life and older age in recovery from illicit drug use: connecting and belonging.

Background: Establishing and maintaining healthy social connections and relationships are important in encouraging a sense of belonging that can help mid-life and older aged women in recovery from illicit drug use. This paper contributes to an under-researched area of substance use recovery among women in mid-life and older age by asking what influence social relationships have on their sense of self as they age into recovery from illicit drugs. Methods: In-depth qualitative interviews were undertaken with 19 women in the United Kingdom who self-identified as 'in recovery' from illicit drug use. The interviews were transcribed verbatim and analyzed using Braun and Clarke's thematic analysis techniques. The study received ethical approval from the University of Glasgow. Results: As their drug use progressed, the women experienced feelings of estrangement and separation from others. Entering and maintaining a healthy recovery from drug use required the women to break their connections to people considered disruptive or challenging. Creating and setting boundaries enabled some of the women to gain a sense of control over their relationships and recovery. Positive reinforcement from others was pivotal to the process of the women's self-acceptance, contributing to better self-concepts that helped them maintain their recovery. Discussion: This investigation into substance use recovery among women in mid-life and older age offers new insights into the relationship challenges they face. It offers suggestions for further research that could support the development of family support programs for mid-life and older age women in active drug use or recovery.

Childhood attention-deficit hyperactivity disorder problems and mid-life cardiovascular risk: prospective population cohort study.

BACKGROUND: It is well-known that childhood attention-deficit hyperactivity disorder (ADHD) is associated with later adverse mental health and social outcomes. Patient-based studies suggest that ADHD may be associated with later cardiovascular disease (CVD) but the focus of preventive interventions is unclear. It is unknown whether ADHD leads to established cardiovascular risk factors because so few cohort studies measure ADHD and also follow up to an age where CVD risk is evident. AIMS: To examine associations between childhood ADHD problems and directly measured CVD risk factors at ages 44/45 years in a UK population-based cohort study (National Child Development Study) of individuals born in 1958. METHOD: Childhood ADHD problems were defined by elevated ratings on both the parent Rutter A scale and a teacher-rated questionnaire at age 7 years. Outcomes were known cardiovascular risk factors (blood pressure, lipid measurements, body mass index and smoking) at the age 44/45 biomedical assessment. RESULTS: Of the 8016 individuals assessed both during childhood and at the biomedical assessment 3.0% were categorised as having childhood ADHD problems. ADHD problems were associated with higher body mass index (B = 0.92 kg/m2, s.d. = 0.27-1.56), systolic (3.5 mmHg, s.d. = 1.4-5.6) and diastolic (2.2 mmHg, s.d. = 0.8-3.6) blood pressure, triglyceride levels (0.24 mol/l, s.d. = 0.02-0.46) and being a current smoker (odds ratio OR = 1.6, s.d. = 1.2-2.1) but not with LDL cholesterol. CONCLUSIONS: Childhood ADHD problems predicted multiple cardiovascular risk factors by mid-life. These findings, when taken together with previously observed associations with cardiovascular disease in registries, suggest that individuals with ADHD could benefit from cardiovascular risk monitoring, given these risk factors are modifiable with timely intervention.

A Woman's Heart: Improving Uptake and Awareness of Cardiovascular Screening for Middle-Aged Populations.

Mid-life, the years leading up to and following the menopause transition, in women is accompanied by a change in cardiometabolic risk factors, including increases in body weight, changes in body composition, a more insulin-resistant state, and a shift towards a more atherogenic dyslipidemia pattern. Cardiovascular disease (CVD) risk assessment should be performed continually throughout the lifespan, as risk is not stagnant and can change throughout the life course. However, mid-life is a particularly important time for a woman to be evaluated for CVD risk so that appropriate preventive strategies can be implemented. Along with assessing traditional risk factors, ascertainment of a reproductive history is an integral part of a comprehensive CVD risk assessment to recognize unique female-specific or female-predominant factors that modify a woman's risk. When there is uncertainty about CVD risk and the net benefit of preventive pharmacotherapy interventions (such as statins), measuring a coronary artery calcium score can help further refine risk and guide shared decision-making. Additionally, there should be heightened sensitivity around identifying signs and symptoms of ischemic heart disease in women, as these may present differently than in men. Ischemia from coronary microvascular disease and/or vasospasm may be present even without obstructive coronary artery disease and is associated with a heightened risk for major cardiovascular events and reduced quality of life. Therefore, correctly identifying CVD in women and implementing preventive and treatment therapies is paramount. Unfortunately, women are underrepresented in cardiovascular clinical trials, and more data are needed about how to best incorporate novel and emerging risk factors into CVD risk assessment. This review outlines an approach to CVD screening and risk assessment in women using several methods, focusing on the middle-aged population.

Extending the sociology of candidacy: Bourdieu's relational social class and mid-life women's perceptions of alcohol-related breast cancer risk.

Alcohol is a modifiable breast cancer risk, increasing risk in a dose-dependent manner. Mid-life women (aged 45-64 years) consume alcohol at higher rates than younger women and this, combined with age, make them a high-risk group for breast cancer. This critical public health problem has a seemingly obvious solution (reduce drinking); however, women do not necessarily know alcohol causes breast cancer, and if they do, reducing consumption is not always possible, or desirable. To innovate public health responses, we employ an interpretative sociological framework 'candidacy' to understand women's perspectives on breast cancer risk relative to alcohol consumption and their social class. Drawing on 50 interviews with Australian mid-life women, our findings reveal the socio-structural determinants of 'candidacy', that mean modifying alcohol consumption for breast cancer prevention is impacted by social class. Utilising Bourdieu's relational capitals, our interpretations show how social class shapes women's ascriptions and enactments of breast cancer candidacy. We offer an important theoretical extension to 'candidacy' by demonstrating more or less fluidity in women's assessment of breast cancer risk according to their agency to adopt breast cancer prevention messages. Understanding the social class possibilities and limitations in women's perceptions of breast cancer risk provides a new opportunity to reduce inequities in breast cancer incidence.

Greenness modifies the association between ambient air pollution and cognitive function in Australian adolescents, but not in mid-life adults.

Exposure to ambient air pollution has been associated with reduced cognitive function in childhood and later life, with too few mid-life studies to draw conclusions. In contrast, residential greenness has been associated with enhanced cognitive function throughout the lifecourse. Here we examine the extent to which (1) ambient air pollution and residential greenness predict later cognitive function in adolescence and mid-life, and (2) greenness modifies air pollution-cognitive function associations. PARTICIPANTS: 6220 adolescents (51% male) and 2623 mid-life adults (96% mothers) from the Longitudinal Study of Australian Children. MEASURES: Exposures: Annual average particulate matter <2.5 µm (PM2.5), nitrogen dioxide (NO2) and greenness (Normalised Difference Vegetation Index) for residential addresses from validated land-use regression models over a 10-13-year period. OUTCOMES: Cognitive function from CogState tests of attention, working memory and executive function, dichotomised into poorer (worst quartile) versus not poor. ANALYSES: Adjusted mixed-effects generalised linear models with residential greenness assessed as an effect modifier (high vs. low divided at median). The annual mean for PM2.5 and NO2 across exposure windows was 6.3-6.8 µg/m3, and 5.5-7.1 ppb, respectively. For adolescents, an IQR increment of NO2 was associated with 19-24% increased odds of having poorer executive function across all time windows, while associations weren't observed between air pollution and other outcomes. For adults, high NO2 predicted poorer cognitive function across all outcomes, while high PM2.5 predicted poorer attention only. There was little evidence of associations between greenness and cognitive function in adjusted models for both generations. Interactions were found between residential greenness, air pollutants and cognitive function in adolescents, but not adults. The magnitude of effects was similar across generations and exposure windows. Findings highlight the potential benefits of cognitive health associated with the regulation of air pollution and urban planning strategies for increasing green spaces and vegetation.