Intersecting Social Inequalities and Body Mass Index Trajectories from Adolescence to Early Adulthood

The transmission of social inequalities through economic difficulties and lifestyle factors on body mass index: An intersectional mediation analysis in the Swedish population

Body mass index (BMI) has increased in Sweden, disproportionally for socially disadvantaged groups, including women, low-educated, and immigrants, who may also face economic constraints, physical inactivity, and poor-quality diets. Intersectional public health research aims to unravel such complex social inequalities, but the intersectional transmission of inequalities to BMI remains unexplored. We aimed to examine intersectional inequalities in BMI mediated by economic strain and health-related lifestyle in the Swedish population. By using the Health on Equal Terms cross-sectional surveys in 2016, 2018, 2020, and 2021 (n = 44,177 inhabitants aged 25 and over), we performed an intersectional mediation analysis to analyze how inequalities across social intersectional strata (by gender, education, and migration status) may be transmitted through economic strain and unhealthy lifestyle (physical inactivity or inadequate fruit/vegetables consumption) to BMI. Our findings showed a sequential transmission that indicates the fact that socially disadvantaged strata (compared with high-educated native men) experienced more economic strain, which in turn led to poorer health-related lifestyles and ultimately to a higher BMI. We also found that certain intersectional strata, such as high-educated women, were more vulnerable to economic strain, despite having lower BMI than high-educated native men. Additionally, the highest BMI and unhealthy lifestyle risk was observed among low- and middle-educated men. In conclusion, not only inequalities in BMI, but also the economic and behavioral pathways underpinning the inequalities, act by intersectional patterns. Public health interventions should provide economic security, particularly for women and migrant population as well as promoting a healthy lifestyle in lower-educated strata, especially among men, to achieve healthy BMI levels.

Social inequalities in child mental health trajectories: a longitudinal study using birth cohort data 12 countries

BACKGROUND

Social inequalities in child mental health are an important public health concern. Whilst previous studies have examined inequalities at a single time point, very few have used repeated measures outcome data to describe how these inequalities emerge. Our aims were to describe social inequalities in child internalising and externalising problems across multiple countries and to explore how these inequalities change as children age.

METHODS

We used longitudinal data from eight birth cohorts containing participants from twelve countries (Australia, Belgium, Denmark, France, Germany, Greece, Italy, Netherlands, Poland, Norway, Spain and the United Kingdom). The number of included children in each cohort ranged from N = 584 (Greece) to N = 73,042 (Norway), with a total sample of N = 149,604. Child socio-economic circumstances (SEC) were measured using self-reported maternal education at birth. Child mental health outcomes were internalising and externalising problems measured using either the Strengths and Difficulties Questionnaire or the Child Behavior Checklist. The number of data collection waves in each cohort ranged from two to seven, with the mean child age ranging from two to eighteen years old. We modelled the slope index of inequality (SII) using sex-stratified multi-level models.

RESULTS

For almost all cohorts, at the earliest age of measurement children born into more deprived SECs had higher internalising and externalising scores than children born to less deprived SECs. For example, in Norway at age 2 years, boys born to mothers of lower education had an estimated 0.3 (95% CI 0.3, 0.4) standard deviation higher levels of internalising problems (SII) compared to children born to mothers with high education. The exceptions were for boys in Australia (age 2) and both sexes in Greece (age 6), where we observed minimal social inequalities. In UK, Denmark and Netherlands inequalities decreased as children aged, however for other countries (France, Norway, Australia and Crete) inequalities were heterogeneous depending on child sex and outcome. For all countries except France inequalities remained at the oldest point of measurement.

CONCLUSIONS

Social inequalities in internalising and externalising problems were evident across a range of EU countries, with inequalities emerging early and generally persisting throughout childhood.

'It's Just Not Working', a Qualitative Exploration of the Weight-Related Healthcare Experiences of Individuals of Arab Heritage With Higher Weight in Australia

INTRODUCTION

Culturally and linguistically diverse population groups disproportionately experience higher weight and other non-weight-related discrimination in healthcare settings outside of their ancestral country. Little is known about the experiences of individuals with Arab heritage. This study aimed to qualitatively explore the intersectional weight-related healthcare experiences of individuals of Arab heritage with higher weight in Australia.

METHODS

A general inductive enquiry approach was used. Purposive, convenience and snowball sampling was used to recruit individuals of Arab heritage residing in Australia. Individuals were invited to participate in an online semistructured interview. Interviews were recorded, transcribed and thematically analysed.

RESULTS

Fifteen participants took part in the study. Of these participants, 93% were female (n = 14), 80% were aged between 18 and 44 years (n = 12), 73% were university educated (n = 11), 53% were born outside of Australia (n = 8) and all were Muslim (n = 15). Four main themes were identified: (1) appearance-based judgement, (2) generalised advice and assumptions, (3) cultural responsiveness and (4) healthcare system constraints.

CONCLUSION

Individuals of Arab heritage with higher weight in Australia, namely, females, often perceive their healthcare experiences as dismissive of their cultural and religious needs and driven by causality assumptions around weight. It is crucial that care delivered encompasses cultural humility, is weight-inclusive and acknowledges systemic constraints. Cultural safety training benchmarks, healthcare management reform and weight-inclusive healthcare approaches are recommended to assist healthcare providers in delivering effective, holistic and culturally safe care.

PATIENT OR PUBLIC CONTRIBUTION

Insights gained from conversations with Arab heritage community members with lived experiences regarding weight-related healthcare encounters informed the study design and approach.

The Extent, Range, and Nature of Quantitative Nutrition Research Engaging with Intersectional Inequalities: A Systematic Scoping Review

Addressing malnutrition for all requires understanding inequalities in nutrition outcomes and how they intersect. Intersectionality is increasingly used as a theoretical tool for understanding how social characteristics intersect to shape inequalities in health outcomes. However, little is known about the extent, range, and nature of quantitative nutrition research engaging with intersectional inequalities. This systematic scoping review aimed to address this gap. Between 15 May 2021 and 15 May 2022, we searched 8 databases. Studies eligible for inclusion used any quantitative research methodology and aimed to investigate how social characteristics intersect to influence nutrition outcomes. In total, 55 studies were included, with 85% published since 2015. Studies spanned populations in 14 countries but were concentrated in the United States (n = 35) and India (n = 7), with just 1 in a low-income country (Mozambique). Race or ethnicity and gender were most commonly intersected (n = 20), and body mass index and overweight and/or obesity were the most common outcomes. No studies investigated indicators of infant and young child feeding or micronutrient status. Study designs were mostly cross-sectional (80%); no mixed-method or interventional research was identified. Regression with interaction terms was the most prevalent method (n = 26); 2 of 15 studies using nonlinear models took extra steps to assess interaction on the additive scale, as recommended for understanding intersectionality and assessing public health impacts. Nine studies investigated mechanisms that may explain why intersectional inequalities in nutrition outcomes exist, but intervention-relevant interpretations were mostly limited. We conclude that quantitative nutrition research engaging with intersectionality is gaining traction but is mostly limited to the United States and India. Future research must consider the intersectionality of a wider spectrum of public health nutrition challenges across diverse settings and use more robust and mixed-method research to identify specific interventions for addressing intersectional inequalities in nutrition outcomes. Data systems in nutrition must improve to facilitate this. This review was registered in PROSPERO as CRD42021253339.

Transitioning to adulthood: Are conventional benchmarks as protective today as they were in the past?

More young adults in the United States are studying beyond high school and working full-time than in the past, yet young adults continue to have high poverty rates as they transition to adulthood. This study uses longitudinal data on two cohorts of young adults from the 1979 and 1997 National Longitudinal Study of Youth to assess whether conventional benchmarks associated with economic success-gaining an education, finding stable employment, and delaying childbirth until after marriage-are as predictive of reduced poverty today as they were in the past. We also explore differences in the protective effect of the benchmarks by race/ethnicity, gender, and poverty status while young. We find that, on average, the benchmarks associated with economic success are as predictive of reduced poverty among young adults today as they were for the prior generation; however, demographics and features of the economy have contributed to higher poverty rates among today's young adults.

Religious Involvement and Allostatic Resilience: Findings from a Community Study of Black and White Americans

Wide inequities in stress and health have been documented between Black and White women and men in the United States. This study asks: How does religion factor into these inequities? We approach this open question from a biopsychosocial perspective, developing three hypotheses for the stress-coping effects of religiosity between groups. We then test our hypotheses with survey and biomarker data from the Nashville Stress and Health Study (2011-2014), a probability sample of Black and White women and men from Davidson County, Tennessee. We find that Black women score the highest on all indicators of religiosity, followed by Black men, White women, and White men. We also find that increased divine control and religious coping predict higher levels of resiliency biomarkers for Black women only and lower levels for White respondents, especially White men. We discuss how our findings inform broader population health inequities and outline several avenues for future research.

Upward Mobility Context and Health Outcomes and Behaviors during Transition to Adulthood: The Intersectionality of Race and Sex

This study investigates how upward mobility context affects health during transition to adulthood and its variations by race and sex. Using county-level upward mobility measures and data from the Panel Study of Income Dynamics, we apply propensity score weighting techniques to examine these relationships. Results show that low upward mobility context increases the likelihood of poor self-rated health, obesity, and cigarette use but decreases alcohol consumption probability. Conversely, high upward mobility context raises the likelihood of distress, chronic conditions, and alcohol use but reduces cigarette use likelihood. In low-opportunity settings, Black individuals have lower risks of chronic conditions and cigarette use than White men. In high-opportunity settings, Black women are more likely to experience depression and chronic conditions, and Black men are likelier to smoke than White men. Our findings emphasize the complex link between upward mobility context and health for different racial and sex groups.

Superwoman Schema and self-rated health in black women: Is socioeconomic status a moderator?

BACKGROUND

The Superwoman Schema (SWS) construct elucidates Black women's socialization to be strong, suppress their emotions, resist vulnerability, succeed despite limited resources, and help others at their own expense. Drawing from intersectionality and social psychological research on self-schemas, this study examined the extent to which SWS was associated with Black women's self-rated health. We also investigated whether socioeconomic status (SES) moderated the association between SWS, its five dimensions, and self-rated health.

METHODS

Data were from the Mechanisms Underlying Stress and Emotions (MUSE) in African-American Women's Health Study, a cohort of African American self-identified women. SWS was assessed using Giscombé's 35-item Superwoman Schema Scale. Socioeconomic status was measured by household income and educational attainment. Ordered logistic regression models were used and statistical interactions were run to test for moderation (N = 408).

RESULTS

First, SWS dimension "obligation to help others" was associated with worse self-rated health (p < .05). Second, household income, but not education, moderated the association between SWS and self-rated health (p < .05): SWS overall was associated with worse self-rated health among higher income women but better self-rated health among lower income women. Third, income moderated the association between SWS dimension "obligation to present an image of strength" and self-rated health (p < .05): presenting strength was associated with better self-rated health for lower income women only. Fourth, moderation results revealed that SWS dimension "obligation to help others" was inversely associated with self-rated health particularly among higher income women.

CONCLUSIONS

Findings speak to the complex interplay between SES and SWS dimensions as they relate to Black women's perceived health.

Epistemic Silences and Experiential Knowledge in Decisions After a First Cesarean: The case of a vaginal birth after cesarean calculator

Evidence-based obstetrics can employ statistical models to justify greater use of cesareans, sometimes excluding experiential elements from informed decision making. Over the past decade, prenatal providers adopted a vaginal birth after cesarean (VBAC) calculator designed to support patients in making informed decisions about their births by estimating their probability for a VBAC. Among other factors, the calculator used race and ethnicity to make its estimate, assigning lower probabilities for a successful VBAC to Black and Hispanic patients. I analyze how a diverse group of women and their providers engaged with the VBAC calculator. Some providers used low calculator scores to remove a shared decision-making model by prescriptively counseling Black and Hispanic women who desired a VBAC into undergoing repeat cesareans. Consequently, women racialized by the calculator as Black or Hispanic used experiential knowledge to challenge the calculator's assessment of their supposed lesser ability to give birth vaginally.

Nutrition and Food Literacy: Framing the Challenges to Health Communication

Nutrition and food literacy are two important concepts that are often used interchangeably, but they are not synonymous. Nutrition refers to the study of how food affects the body, while food literacy refers to the knowledge, skills, and attitudes necessary to make informed decisions about food and its impact on health. Despite the growing awareness of the importance of food literacy, food illiteracy remains a global issue, affecting people of all ages, backgrounds, and socioeconomic status. Food illiteracy has serious health implications as it contributes to health inequities, particularly among vulnerable populations. In addition, food literacy is a complex and multidisciplinary field, and there are numerous challenges to health communication that must be addressed to effectively promote food literacy and improve health outcomes. Addressing food illiteracy and the challenges to health communication is essential to promote health equity and improve health outcomes for all populations.

Gender, race/skin colour and incidence of hypertension in ELSA-Brasil: an intersectional approach

OBJECTIVE

Race and gender inequities in the incidence of hypertension (HTN) are well documented; however, few empirical investigations looked into these associations, considering the synergies and heterogeneous experiences of intersectional gender and race/skin colour groups. This study investigated the association of intersectional identities defined by gender and race/skin colour with HTN incidence, and verified whether they are affected by educational level in adulthood.

DESIGN

We used the Longitudinal Study of Adult Health (ELSA-Brasil) data to estimate the incidence of HTN between visits 1 (2008-2010) and 2 (2012-2014), in 8528 participants without hypertension at visit 1. HTN was defined as systolic blood pressure ≥140 mmHg, or diastolic blood pressure ≥90 mmHg, or use of antihypertensive drugs. Generalized linear models with Poisson distribution and log link function were used to assess the associations.

RESULTS

The incidence of HTN was 43.4/1000 person-years, ranging from 30.5/1000 in White women to 59.4/1000 in Black men. After adjusting by age and family history of HTN, the incidence rate ratio (IRR) was higher in Black men (2.25; 95%CI: 1.65-3.08), Brown (Pardo) men (1.89; 95%CI: 1.59-2.25), Black women (1.85; 95%CI: 1.50-2.30), Brown (Parda) women (1.47; 95%CI: 1.31-1.67) and White men (1.76; 95%CI: 1.49-2.08), compared to White women. These associations were maintained even after considering socioeconomic, behavioural and health mediators in the model. No interaction was found between education level and intersectional identities in the IRRs observed.

CONCLUSION

By using an intersectional approach, we showed the complex relations between race/skin colour and gender inequities in the incidence of HTN, pointing not only that Black men have the highest risk of developing HTN, but also that the risk of HTN is greater in Black women than in White men, when compared to White women.

Theoretical Approaches to Research on the Social Determinants of Obesity

This article reviews selected theoretical approaches explaining the social determinants of obesity. The significance of this topic for medicine, public health, and other areas of obesity-related research is the growing body of evidence showing that the social environment is often key to understanding the risk of obesity. A review of relevant literature and analysis of empirical evidence linking theory to data in studies of obesity was performed. Several studies show that differences in social behavior and living conditions associated with SES, lifestyles, inequality, and other social variables have important roles in weight gain. Because the social determinants of obesity often begin in childhood, life course theory and its concepts of cumulative advantage/disadvantage and cumulative inequality are initially reviewed, followed by a discussion of how fundamental cause theory, health lifestyle theory, and cultural capital theory can be applied to obesity research. The stress process model and the concepts of social networks and neighborhood disadvantage concerning obesity are also included.

Spotlight on Age: An Overlooked Construct in Medical Sociology

Medical sociology gives limited attention to age-a surprising observation given the aging of the population and the fact that age is among the strongest determinants of health. We examine this issue through an analysis of articles published in Journal of Health and Social Behavior (JHSB) and Sociology of Health & Illness (SHI) between 2000 and 2019. One in 10 articles focused on age or aging, with attention increasing over the period. However, the journals differed. More JHSB than SHI articles addressed it, but fewer focused on the latest life stages when frailty often appears. We discuss three dimensions of age that would enrich medical sociology: as a dimension of inequality akin to race and gender with similar health effects, as an institution interacting with the medical one, and as an identity-again, akin to race and gender-through which people process their experiences in ways that affect health.

Contextualizing Educational Disparities in Health: Variations by Race/Ethnicity, Nativity, and County-Level Characteristics

Educational disparities in health are well documented, yet the education-health relationship is inconsistent across racial/ethnic and nativity groups. These inconsistencies may arise from characteristics of the early life environments in which individuals attain their education. We evaluate this possibility by investigating (1) whether educational disparities in cardiometabolic risk vary by race/ethnicity and nativity among Black, Hispanic, and White young adults; (2) the extent to which racial/ethnic-nativity differences in the education-health relationship are contingent on economic, policy, and social characteristics of counties of early life residence; and (3) the county characteristics associated with the best health at higher levels of education for each racial/ethnic-nativity group. Using data from the National Longitudinal Study of Adolescent to Adult Health, we find that Black young adults who achieve high levels of education exhibit worse health across a majority of contexts relative to their White and Hispanic counterparts. Additionally, we observe more favorable health at higher levels of education across almost all contexts for White individuals. For all other racial/ethnic-nativity groups, the relationship between education and health depends on the characteristics of the early life counties of residence. Findings highlight place-based factors that may contribute to the development of racial/ethnic and nativity differences in the education-health relationship among U.S. young adults.

Do intersecting identities structure social contexts to influence life course health? The case of school peer economic disadvantage and obesity

Scholarship linking social contextual measures to health outcomes has grown in recent decades, but the role of individuals' intersecting identities in structuring social contexts to influence health remains unclear. Building on an existing intersectionality framework, we conceptualize how this may occur through social relationships. Then, we apply this framework to analyze whether adolescent peer social contextual disadvantage influences life-course obesity heterogeneously by individual gender, race, and early-life income. We take a life course approach as adolescence is a sensitive period for both social development and adult obesity development. In our analysis, we use cohort data from the National Longitudinal Study of Adolescent to Adult Health and leverage quasi-experimental variation in adolescent peers to addresses common sources of bias in prior observational studies. We find that among Black men from lower-income households in adolescence, there is a strong negative relationship between adolescent peer economic disadvantage and adult obesity that strengthens over time. By contrast, among Black women across adolescent household income levels, we find a strong positive relationship between adolescent peer economic disadvantage and obesity that emerges as women leave high school and endures into mid-adulthood. Among non-Black women, a more modest positive relationship appears between peer disadvantage and obesity. Among non-Black men, we find no relationship. These diverging patterns suggest that the pathways through which adolescent peer economic disadvantage influences health may differ or produce differential effects based on intersecting race, gender, and socioeconomic identities. Such heterogenous effects offer new insights, and future directions, for better understanding social life-course determinants of adult health and addressing inequities.

Structural Intersectionality as a New Direction for Health Disparities Research

This article advances the field by integrating insights from intersectionality perspectives with the emerging literatures on structural racism and structural sexism-which point to promising new ways to measure systems of inequality at a macro level-to introduce a structural intersectionality approach to population health. We demonstrate an application of structural intersectionality using administrative data representing macrolevel structural racism, structural sexism, and income inequality in U.S. states linked to individual data from the Behavioral Risk Factor Surveillance System to estimate multilevel models (N = 420,644 individuals nested in 76 state-years) investigating how intersecting dimensions of structural oppression shape health. Analyses show that these structural inequalities: (1) vary considerably across U.S. states, (2) intersect in numerous ways but do not strongly or positively covary, (3) individually and jointly shape health, and (4) are most consistently associated with poor health for black women. We conclude by outlining an agenda for future research on structural intersectionality and health.

Intersectionality in quantitative health disparities research: A systematic review of challenges and limitations in empirical studies

RATIONALE

Quantitative health disparities research has increasingly employed intersectionality as a theoretical tool to investigate how social characteristics intersect to generate health inequality. Yet, intersectionality was not designed to quantify, predict, or identify health disparities, and, as a result, multiple criticisms against its misapplication in health disparities research have been made. As such, there is an emerging need to evaluate the growing body of quantitative research that aims to investigate health disparities through an intersectional lens.

METHODS

We conducted a systematic review from earliest records to January 2020 to (i) describe the scope of limitations when applying intersectionality to quantitative health disparities research, and (ii) identify recommendations to improve the future integration of intersectionality with this scholarship. We identified relevant publications with electronic searches in PubMed and CA Web of Science. Studies eligible for inclusion were English-language publications that used quantitative methodologies to investigate health disparities among adults in the U.S. while explicitly claiming to adopt an intersectional perspective. Out of 1279 articles reviewed, 65 were eligible for inclusion.

RESULTS

Our review found that, while the value of intersectionality to the study of health disparities is evident, the existing research struggles with meeting intersectionality's fundamental assumptions. In particular, four limitations were found to be widespread: narrowing the measurements of intersectionality, intersectional groups, and health outcomes; placing primacy on the study of certain intersectional groups to the neglect of others; overlooking underlying explanatory mechanisms that contribute to the health disparities experienced by intersectional groups; and, lacking in the use of life-course perspectives to show how health disparities vary across different life stages.

CONCLUSION

If the goal of health equality is to be achieved among diverse intersectional groups, future research must be assisted by the collection and examination of data that overcomes these limitations.

Polygenic Scores in Developmental Psychology: Invite Genetics In, Leave Biodeterminism Behind

Polygenic scores offer developmental psychologists new methods for integrating genetic information into research on how people change and develop across the life span. Indeed, polygenic scores have correlations with developmental outcomes that rival correlations with traditional developmental psychology variables, such as family income. Yet linking people's genetics with differences between them in socially valued developmental outcomes, such as educational attainment, has historically been used to justify acts of state-sponsored violence. In this review, we emphasize that an interdisciplinary understanding of the environmental and structural determinants of social inequality, in conjunction with a transactional developmental perspective on how people interact with their environments, is critical to interpreting associations between polygenic measures and phenotypes. While there is a risk of misuse, early applications of polygenic scores to developmental psychology have already provided novel findings that identify environmental mechanisms of life course processes that can be used to diagnose inequalities in social opportunity.

Race/Ethnicity, Gender, and Trajectories of Depressive Symptoms Across Early- and Mid-Life Among the Add Health Cohort

While disparities in depressive symptoms by race/ethnicity and gender have been documented, left unclear is how such status characteristics intersect to influence mental health, particularly across early life and among a diverse set of population subgroups. This study investigates how intra- and inter-individual trends in depressive symptoms unfold across a 30-year span (ages 12-42) and are structured by the intersection of race/ethnicity and gender among White, Black, Hispanic, and Asian American young adults (N = 18,566). Analyses use data from the National Longitudinal Study of Adolescent to Adult Health, a nationally representative study of adolescents who have been followed through their fourth decade of life. We draw on Waves I-IV and a representative subsample of the brand new Wave V data. Growth curve models indicated depressive symptoms decreased across adolescence and young adulthood before increasing in the early 30s. Racial/ethnic minorities reported more depressive symptoms than Whites. Women reported more depressive symptoms than men and experienced especially steep increases in their late 30s. Racial/ethnic-gender disparities remained stable with age, except for Hispanic-White disparities among women and Asian American-White disparities among men, which narrowed with age. Overall, findings demonstrate dynamic inequalities across a longer period of the life span than was previously known, as well as heterogeneity in trajectories of poor mental health within and between racial/ethnic-gender groups. Results also suggest that Black and Asian American women experience the highest mental health risks and that interventions for reducing disparities in depressive symptoms should focus on adults in their late 20s/early 30s, particularly women of color.

Race/ethnicity, maternal educational attainment, and infant mortality in the United States

This study examines patterns of and explanations for racial/ethnic-education disparities in infant mortality in the United States. Using linked birth and death data (2007-2010), we find that while education-specific infant mortality rates are similar for Mexican Americans and Whites, infants of college-educated African American women experience 3.1 more deaths per 1,000 live births (Rate Ratio = 1.46) than infants of White women with a high school degree or less. The high mortality rates among infants born to African American women of all educational attainment levels are fully accounted for by shorter gestational lengths. Supplementary analyses of data from the National Longitudinal Study of Adolescent to Adult Health show that college-educated African American women exhibit similar socioeconomic, contextual, psychosocial, and health disadvantages as White women with a high school degree or less. Together, these results demonstrate African American-White infant mortality and socioeconomic, health, and contextual disparities within education levels, suggesting the role of life course socioeconomic disadvantage and stress processes in the poorer infant health outcomes of African Americans relative to Whites.

Reconceptualising precision public health

As currently conceived, precision public health is at risk of becoming precision medicine at a population level. This paper outlines a framework for precision public health that, in contrast to its current operationalisation, is consistent with public health principles because it integrates factors at all levels, while illuminating social position as a fundamental determinant of health and health inequities. We review conceptual foundations of public health, outline a proposed framework for precision public health and describe its operationalisation within research and practice. Social position shapes individuals' unequal experiences of the social determinants of health. Thus, in our formulation, precision public health investigates how multiple dimensions of social position interact to confer health risk differently for precisely defined population subgroups according to the social contexts in which they are embedded, while considering relevant biological and behavioural factors. It leverages this information to uncover the precise and intersecting social structures that pattern health outcomes, and to identify actionable interventions within the social contexts of affected groups. We contend that studies informed by this framework offer greater potential to improve health than current conceptualisations of precision public health that do not address root causes. Moreover, expanding beyond master categories of social position and operationalising these categories in more precise ways across time and place can enrich public health research through greater attention to the heterogeneity of social positions, their causes and health effects, leading to the identification of points of intervention that are specific enough to be useful in reducing health inequities. Failure to attend to this level of particularity may mask the true nature of health risk, the causal mechanisms at play and appropriate interventions. Conceptualised thus, precision public health is a research endeavour with much to offer by way of understanding and intervening on the causes of poor health and health inequities.As currently conceived, precision public health is at risk of becoming precision medicine at a population level. This paper outlines a framework for precision public health that, in contrast to its current operationalization, is consistent with public health principles because it integrates factors at all levels, while illuminating social position as a fundamental determinant of health and health inequities. We review conceptual foundations of public health, outline a proposed framework for precision public health and describe its operationalization within research and practice. Social position shapes individuals' unequal experiences of the social determinants of health. Thus, in our formulation, precision public health investigates how multiple dimensions of social position interact to confer health risk differently for precisely defined population subgroups according to the social contexts in which they are embedded, while considering relevant biological and behavioural factors. It leverages this information to uncover the precise and intersecting social structures that pattern health outcomes, and to identify actionable interventions within the social contexts of affected groups. We contend that studies informed by this framework offer greater potential to improve health than current conceptualizations of precision public health that do not address root causes. Moreover, expanding beyond master categories of social position and operationalizing these categories in more precise ways across time and place can enrich public health research through greater attention to the heterogeneity of social positions, their causes and health effects, leading to identification of points of intervention that are specific enough to be useful in reducing health inequities. Failure to attend to this level of particularity may mask the true nature of health risk, the causal mechanisms at play and appropriate interventions. Conceptualized thus, precision public health is a research endeavour with much to offer by way of understanding and intervening on the causes of poor health and health inequities.

Does marriage matter? Racial differences in allostatic load among women

Prior research suggests that there are health benefits associated with marriage, although the physiological implications of marital status for women's health is less clear. Given that recent trends indicate that Black women are less likely to marry than White women, the goal of this study was to evaluate whether marital status accounts for racial differences in women's physical health. Using data from the Nashville Stress and Health Study (2011–2014), we estimated the probability of high allostatic load (AL), a biological indicator of physiological dysregulation, among women aged 18–69. We examined AL scores by race and marital status, evaluated the extent to which Black-White differences persisted after accounting for marital status, and assessed whether the racial disparity in AL varied across marital status groups. Results indicated that Black women had higher AL than White women, although racial differences in AL were not explained by marital status. In addition, marital status was a significant predictor of AL among Black, but not White women. Moreover, the racial disparity in AL was smallest among never married women and largest among currently and formally married women. Taken together, these findings suggest that Black-White inequalities in women's physical health are not explained by racial differences in marital status, despite the widening racial gap in marriage. Nevertheless, marital status may be an influential factor in shaping outcomes among Black women.

Light Privilege? Skin Tone Stratification in Health among African Americans

Skin tone is a significant marker used by others to evaluate and rank the social position of minorities. While skin color represents a particularly salient dimension of race, its consequences for health remains unclear. This study uses four waves of panel data from the Coronary Artery Risk Development in Young Adults (CARDIA) Study and random intercept multilevel models to address three research questions critical to understanding the skin color-health relationship among African American adults (N=1,680): what is the relationship between skin color and two global measures of health (cumulative biological risk and self-rated health)? To what extent are these relationships gendered? Do socioeconomic resources, stressors, and discrimination help explain the skin color-health relationship? Findings indicate that dark-skinned women have more physiological deterioration and self-report worse health than lighter-skinned women. These associations are not evident among men, and socioeconomic factors, stressors, and discrimination do not explain the light-dark disparity in physiological deterioration among women. Differences in self-ratings of health among women are partially explained by education and income. Results of this study highlight heterogeneity in determinants of health among African Americans, and provide a more nuanced understanding of health inequality by identifying particularly disadvantaged members of racial groups that are often assumed to have monolithic experiences.

Socioeconomic Disadvantage across the Life Course Is Associated with Diet Quality in Young Adulthood

Socioeconomic position (SEP) is a key determinant of diet quality across the life course. Young adulthood is a unique period of transition where dietary inequities between groups with lower and higher SEP may widen. This study investigated associations between SEP in both childhood and young adulthood and diet quality in young adulthood. Data from 1949 Canadian young adults aged 18⁻30 who participated in the Canada Food Study were analyzed. Healthy Eating Index⁻2015 (HEI-2015) scores were calculated based on one 24-hour dietary recall. Childhood and young adult SEP were represented by self-report of participants' parent(s)' and their own highest educational level, respectively. Linear regression was used to examine associations between childhood and adult SEP and adult HEI-2015 score. Mediation analyses examined whether adult SEP mediated the relationship between childhood SEP and adult HEI-2015 score. Lower SEPs in childhood and adulthood were each associated with lower HEI-2015 scores in young adulthood. Adult SEP mediated up to 13.0% of the association between childhood SEP and adult HEI-2015 scores. Study findings provide support for key life course hypotheses and suggest latent, pathway, and cumulative effects of SEP across the early life course in shaping the socioeconomic patterning of diet quality in young adulthood.

BMI Trajectories in Adulthood: The Intersection of Skin Color, Gender, and Age among African Americans

This study addresses three research questions critical to understanding if and how skin color shapes health among African Americans: (1) Does skin color predict trajectories of body mass index (BMI) among African Americans across ages 32 to 55? (2) To what extent is this relationship contingent on gender? (3) Do sociodemographic, psychosocial, and behavioral factors explain the skin color-BMI relationship? Using data from the Coronary Artery Risk Development in Young Adults Study and growth curve models, results indicate that dark-skinned women have the highest BMI across adulthood compared to all other skin color-gender groups. BMI differences between dark- and lighter-skinned women remain stable from ages 32 to 55. Among men, a BMI disadvantage emerges and widens between light- and dark-skinned men and their medium-skinned counterparts. Observed sociodemographic characteristics, stressors, and health behaviors do not explain these associations. Overall, findings suggest that skin color- and gender-specific experiences likely play an important role in generating BMI inequality.