Genome-wide associations, polygenic risk, and Mendelian randomization reveal limited interactions between John Henryism and cynicism

BACKGROUND

John Henryism (JH) is a strategy for dealing with chronic psychological stress characterized by high levels of physical effort and work. Cynicism is a belief that people are motivated primarily by self-interest. High scores on the JH scale and cynicism measures correlate with an increased risk of cardiovascular disease. High cynicism is also a hallmark of burnout syndrome, another known risk factor for heart disease.

AIM

To evaluate possible interactions between JH and cynicism hoping to clarify risk factors of burnout.

METHODS

We analyzed genetic and psychological data available from the Database of Genotypes and Phenotypes for genome-wide associations with these traits. We split the total available samples and used plink to perform the association studies on the discovery set (n = 1852, 80%) and tested for replication using the validation set (n = 465). We used scikit-learn to perform supervised machine learning for developing genetic risk algorithms.

RESULTS

We identified 2, 727, and 204 genetic associations for scores on the JH, cynicism and cynical distrust (CD) scales, respectively. We also found 173 associations with high cynicism, 109 with high CD, but no associations with high JH. We also produced polygenic classifiers for high cynicism using machine learning with areas under the receiver operator characteristics curve greater than 0.7.

CONCLUSION

We found significant genetic components to these traits but no evidence of an interaction. Therefore, while there may be a genetic risk, JH is not likely a burnout risk factor.

Superwoman Schema and John Henryism among African American women: An intersectional perspective on coping with racism

RATIONALE

John Henryism and Superwoman Schema (SWS) are dispositional characteristics adopted to overcome the challenges of chronic psychosocial stress, and have particular salience for African American women. Both show protective and harmful effects on health and share conceptual similarities and distinctions, yet there is no empirical evidence of the potential overlap resulting in uncertainty about the unique roles they may each play concerning the health of African American women.

OBJECTIVE

We examined: 1) whether and to what extent John Henryism and SWS represent similar or distinct constructs relevant to the unique sociohistorical and sociopolitical position of African American women, and 2) whether the two differentially predict health outcomes.

METHODS

Data are from a purposive and socioeconomically diverse sample of 208 African American women in the San Francisco Bay Area. First, we conducted a progressive series of tests to systematically examine the conceptual and empirical overlap between John Henryism and SWS: correlation analysis, exploratory factor analysis (EFA), principal component analysis and k-modes cluster analysis. Next, we used multivariable regression to examine associations with psychological distress and hypertension.

RESULTS

John Henryism and SWS were moderately correlated with one another (rs = 0.30-0.48). In both EFA and cluster analyses, John Henryism items were distinct from SWS subscale items. For SWS, feeling an obligation to present an image of strength and an obligation to help others predicted higher odds of hypertension (p < 0.05); having an intense motivation to succeed predicted lower odds (p = 0.048). John Henryism did not predict hypertension. Feeling an obligation to help others and an obligation to suppress emotions predicted lower levels of psychological distress (p < 0.05) whereas John Henryism predicted higher distress (p = 0.002).

CONCLUSIONS

We discuss the implications of these findings for the measurement of culturally specific phenomena and their role in contributing to the unequal burden of ill health among African American women.

The contribution of research to racial health equity? Blame and responsibility in navigating the status quo of anti-black systemic racism

Thirty-seven years ago, the Secretary's Task Force on Black and Minority Health called attention to a "national paradox" of persistent Black-White health disparities despite overall health improvements for the nation (HHS, 1985). Subsequent updates to the "Heckler Report" came to the same conclusion; Black Americans continued to exhibit poorer health in comparison to White Americans (Satcher et al., 2005). Current population health statistics demonstrate Black-White health disparities comparable to 1985 (AHRQ, 2018; Shiels et al., 2021; Wall et al., 2018). Although psychological, behavioral, social, and economic factors all contribute to Black-White differences in health, there is a noticeable increase in discussions about the importance of systemic racism in producing racial health disparities. This article addresses three questions relevant to research on racism and the health of Black Americans: (1) Why has academic public health research on racism failed to reduce racial health disparities? (2) What can academic public health scientists do differently to reduce the impact of systemic racism on inequities among Black and White Americans? (3) What can Black Americans do in the face of present-day anti-Black systemic racism? We argue that to convert the vision of health equity into a visible reality, health equity research scientists must move beyond discussion, observation, and description. We also argue that to demonstrate progress in reducing racial health disparities, health equity scientists will need to work much more directly on eradicating racism as a fundamental cause of health differences between Black and White Americans. As scientists, the challenge we face is how to accomplish this mission without leaving the realm of science. Racism is a social determinant of Black health and social determinants are political problems. Political problems require political solutions.

Pushing Past Limits: How Efficacious Is High-Effort Coping for Self-Rated Health among African American and Caribbean Black Women?

Due to systemic oppression, Black women experience distinct risks across the life course, such as exposure to various stressors that shape lower ratings of self-rated health. This is important given that self-rated health is a stronger indicator of current morbidity and subsequent mortality than physician assessments. However, there has been limited consideration of the role of coping in shaping self-rated health among this group. John Henryism, or high-effort coping, is a culturally relevant coping style that reflects the broader societal, cultural, and historical context that shapes lived experiences of Black populations navigating racism and capitalism in the U.S., and has received limited consideration in health research among Black women. Additionally, less is known regarding how ethnicity shapes John Henryism and health processes among Black women specifically. Therefore, the present study examined the association between John Henryism and self-rated health among African American and Caribbean Black women (n = 1580) collectively, and explored this association among Caribbean Black women specifically, utilizing the National Survey of American Life (NSAL 2001-2003). Findings show that while John Henryism was not directly associated with self-rated health among either group, once sociodemographic characteristics and stress exposure were accounted for, John Henryism was associated with lower odds of fair or poor self-rated health among both groups.

Experiencing Burnout: John Henryism, Gender Role Conflict, and Anxiety Among Incarcerated Black Men

At the intersection of race and gender, Black men encounter conflicting and often stress-inducing gender norms. Research suggests Black men may utilize John Henryism Active Coping (JHAC), a culturally-relevant strategy to manage stress. However, little is known about how incarcerated Black men cope with gender role conflict (GRC) and resulting psychological distress. To better understand stressors and coping strategies among Black male prisoners, the current study examined the relationships between GRC, anxiety, and JHAC among N = 193 incarcerated Black men nearing community reentry. Hierarchical linear regression results showed length of incarceration, GRC, and anxiety were all negatively associated with JHAC. Full-time employment prior to incarceration was positively associated with JHAC. Moderation analyses indicated anxiety increased the strength of the negative association between GRC and JHAC. Implications highlight incarcerated Black men may benefit from interventions that encourage active coping strategies to manage gender-related stress and anxiety.

PTSD diagnosis and nonmedical use of benzodiazepines among African American incarcerated men: the mitigating effect of John Henry active coping

The current study examined the relationship between PTSD and nonmedical use of benzodiazepines (BZDs) based on level of John Henry Active Coping (JHAC) among African American incarcerated men. Data were derived from the Helping Incarcerated Men (HIM) Study (n = 208). Nonmedical use of BZDs was measured for the 30 days before incarceration. Current PTSD diagnosis and JHAC were determined using DSM-5 criteria and the JHAC Scale. Adjusted logistic regression analyses showed PTSD diagnosis was significantly associated with nonmedical BZD use (p = .011), but that JHAC did not significantly mitigate this relationship. African American incarcerated men may experience an unmet need with regards to mental health treatment.

Childhood Socioeconomic Status and Cardiometabolic Health: A Test of the John Henryism Hypothesis in African American Older Adults

BACKGROUND

John Henryism (JH) is a form of active high-effort coping. Low-socioeconomic status (SES) African Americans adopting JH to deal with structural racism and other chronic stressors might be more likely to display cardiovascular disease risk factors. Previous tests of this hypothesis have mostly focused on the moderating role of current SES and hypertension as the outcome variable. Furthermore, most of the previous work has been conducted among young and middle-aged adults. This study aimed at extending work on the JH hypothesis by testing the combined effect of JH and childhood SES on metabolic syndrome and systemic inflammation among African American older adults.

METHODS

One hundred seventy urban African American older adults (Mage = 67.64 years, 75.9% female) were recruited. Participants completed questionnaires assessing JH, childhood SES, and other variables used as covariates (ie, demographic information, chronic conditions, medication use, and health behaviors). Blood pressure, waist circumference, and blood were also collected. Triglycerides, high-density lipoprotein cholesterol, hemoglobin A1C, and C-reactive protein levels were measured from the blood samples.

RESULTS

JH was positively associated with metabolic syndrome symptoms among participants reporting low childhood SES levels, but not among those reporting high childhood SES levels. The same pattern did not emerge when we considered current SES. Similar patterns of results did not emerge as far as systemic inflammation was concerned.

CONCLUSIONS

Our findings highlight the importance of considering the joint impact of objective conditions early in life and individual psychological proclivities in explaining increased risk for cardiovascular disease risk in this population.

Toxic stress and burnout: John Henryism and social dominance in the laboratory and STEM workforce

Persons Excluded from science because of Ethnicity and Race (PEERs) face chronic exposure to interpersonal stressors, such as social discrimination, throughout their scientific careers, leading to a long-term decline in physical and mental health. Many PEERs exhibit John Henryism, a coping mechanism to prolonged stress where an individual expends higher levels of effort and energy at the cost of their physical and mental health. In this article, we discuss how social dominance may increase John Henryism within the STEM community; the causes, effects and costs of John Henryism; and highlight solutions to combat these social adversity stressors within the academic institution.

Is John Henryism a Health Risk or Resource?: Exploring the Role of Culturally Relevant Coping for Physical and Mental Health among Black Americans

Research shows that John Henryism, a high-effort, active coping style, is associated with poor physical health, whereas others suggest it may be psychologically beneficial. As such, it is unclear whether John Henryism represents a health risk or resource for black Americans and whether its impact varies across sociodemographic and gender groups. The present study used data from a representative community sample of black Americans (n = 627) from the Nashville Stress and Health Study (2011-2014) to clarify the physical and mental health consequences of John Henryism by assessing its relationship with depressive symptoms and allostatic load (AL). Results indicate that John Henryism is associated with increased AL scores and fewer depressive symptoms. Additionally, the association between John Henryism and AL is conditional on socioeconomic status. Study results underscore the importance of evaluating both physical and mental health to clarify the health significance of John Henryism among black Americans.

Impostor Phenomenon and Psychological Well-Being: The Moderating Roles of John Henryism and School Racial Composition Among Black College Students

The impostor phenomenon (IP), or erroneous cognitions of intellectual incompetence, is a risk factor for poor psychological adjustment among Black emerging adults. Grounded in Lazarus and Folkman's Stress and Coping Framework, the current study investigated John Henryism's active coping and institutional racial composition as moderators of the association between IP and indicators of psychological well-being among 266 Black students (77% women; M _age = 19.87) attending predominately White institutions (PWIs) and historically Black colleges/universities (HBCUs). Hierarchical moderation regression analyses revealed that IP was associated with decreases in well-being indicators among students attending PWIs and HBCUs. Moreover, students who attended PWIs and reported higher levels of John Henryism (+1 SD) were most vulnerable to increases in social anxiety, particularly at higher levels of IP. Results suggest that the interaction between IP, John Henrysim, and institutional racial composition may negatively influence psychological well-being. We discuss how these findings can be used to inform clinical and educational practices to best support Black college students.

Striving While Black: Race and the Psychophysiology of Goal Pursuit

Population health scientists have largely overlooked anticipatory stressors and how different groups of people experience and cope with anticipatory stress. I address these gaps by examining black-white differences in the associations between an important anticipatory stressor-goal-striving stress (GSS)-and several measures of psychophysiology. Hypotheses focusing on racial differences in GSS and psychophysiology are tested using self-report and biomarker data from the Nashville Stress and Health Study (2011-2014), a cross-sectional probability survey of black and white working-age adults from Davidson County, Tennessee (n = 1,252). Compared to their white peers, blacks with higher GSS report greater self-esteem and fewer symptoms of depression and anxiety. However, increased GSS also predicts elevated levels of high-effort coping (i.e., John Henryism), neuroendocrine stress hormones, and blood pressure for blacks but not whites. I discuss the implications of these findings for scholars interested in the stress process and broader black-white health inequalities in the United States.

An Examination of John Henryism, Trust, and Medication Adherence Among African Americans With Hypertension

Background. John Henryism is defined as a measure of active coping in response to stressful experiences. John Henryism has been linked with health conditions such as diabetes, prostate cancer, and hypertension, but rarely with health behaviors. Aims. We hypothesized that reporting higher scores on the John Henryism Scale may be associated with poorer medication adherence, and trust in providers may mediate this relationship. Method. We tested this hypothesis using data from the TRUST study. The TRUST study included 787 African Americans with hypertension receiving care at a safety-net hospital. Ordinal logistic regression was used to examine the relationship between John Henryism and medication adherence. Results. Within our sample of African Americans with hypertension, lower John Henryism scores was associated with poorer self-reported adherence (low, 20.62; moderate, 19.19; high, 18.12; p < .001). Higher John Henryism scores were associated with lower trust scores (low John Henryism: 40.1; high John Henryism: 37.9; p < .001). In the adjusted model, each 1-point increase in the John Henryism score decreased the odds of being in a better cumulative medication adherence category by a factor of 4% (odds ratio = 0.96, p = .014, 95% confidence interval = 0.93-0.99). Twenty percent of the association between medication adherence and John Henryism was mediated by trust (standard deviation = 0.205, 95% confidence interval = 0.074-0.335). Discussion. This study provides important insights into the complex relationship between psychological responses and health behaviors. It also contributes to the body of literature examining the construct of John Henryism among African Americans with hypertension. Conclusion. The findings of this study support the need for interventions that promote healthful coping strategies and patient-provider trust.

Everyday Racial Discrimination and Hypertension among Midlife African American Women: Disentangling the Role of Active Coping Dispositions versus Active Coping Behaviors

Racial discrimination, a psychosocial stressor, may contribute to disproportionate rates of hypertension among African American women. Coping moderates the effects of psychosocial stress on health. Coping dispositions describe stable personality characteristics, whereas contextual frameworks emphasize flexible coping behaviors in response to specific stressful encounters. Using data from the African American Women's Heart and Health Study-a non-probability cross-section of 208 midlife African American women in Northern California-we estimated the association between everyday racial discrimination (Everyday Discrimination Scale, EDS) and prevalence of hypertension (HTN), and evaluated moderation by coping disposition (John Henryism Active Coping scale, JH) versus context-specific active coping behavior (Active Coping with Racism scale, ACR). There were no main associations between EDS, JH, or ACR on HTN prevalence. There was evidence of statistical interaction between EDS and ACR (p-int = 0.05), but not JH (p-int = 0.90). Among those with high levels of ACR, reporting monthly (prevalence ratio (PR) = 2.35, 95% confidence interval (CI) = 1.13, 4.87), weekly (PR = 2.15, 95% CI = 1.01, 4.61), or daily (PR = 2.36, 95% CI = 1.14, 4.88) EDS was associated with higher HTN prevalence, versus reporting racial discrimination yearly or less. In contrast, among those with low levels of ACR, reporting more chronic racial discrimination was associated with lower hypertension prevalence, although results were less precise. Findings suggest that ongoing active coping with chronic racial discrimination may contribute to hypertension risk among African American women.

Weathering, Drugs, and Whack-a-Mole: Fundamental and Proximate Causes of Widening Educational Inequity in U.S. Life Expectancy by Sex and Race, 1990-2015

Discussion of growing inequity in U.S. life expectancy increasingly focuses on the popularized narrative that it is driven by a surge of "deaths of despair." Does this narrative fit the empirical evidence? Using census and Vital Statistics data, we apply life-table methods to calculate cause-specific years of life lost between ages 25 and 84 by sex and educational rank for non-Hispanic blacks and whites in 1990 and 2015. Drug overdoses do contribute importantly to widening inequity for whites, especially men, but trivially for blacks. The contribution of suicide to growing inequity is unremarkable. Cardiovascular disease, non-lung cancers, and other internal causes are key to explaining growing life expectancy inequity. Results underline the speculative nature of attempts to attribute trends in life-expectancy inequity to an epidemic of despair. They call for continued investigation of the possible weathering effects of tenacious high-effort coping with chronic stressors on the health of marginalized populations.

Racial discrimination, John Henryism coping, and behavioral health conditions among predominantly poor, urban African Americans: Implications for community-level opioid problems and mental health services

The current study examined the relationship between John Henryism Active Coping (JHAC), experiences of racial discrimination, and behavioral health outcomes in a community sample of 319 Black adults. Assessments included primary health care screenings as well as self-reported survey questions to assess JHAC, experiences of discrimination, and self-reported behavioral health. Logistic regression models, adjusted for control variables, found a significant relationship between JHAC and having an opioid problem (odds ratio [OR] = 0.95, p = 0.003) and needing mental health services (OR = 0.95, p < 0.001), such that higher levels of coping were associated with lower odds of reporting an opioid problem and needing mental health services. Notably, racial discrimination was not significantly independently associated with behavioral health. Implications for interventions and community programming are discussed.

Low Socioeconomic Status but Resilient: Panacea or Double Trouble? John Henryism in the International IMIAS Study of Older Adults

John Henry (JH) theory provides a framework for understanding the physiological toll exerted on low socioeconomic status (SES) individuals as they overcome psychosocial stressors imposed by their environments. This theory suggests that resilience, a seemingly positive social adaptation, may in fact be physically deleterious. JH theory has been well-described in low-SES rural male African Americans, however it is currently unclear whether validity of this theory extends to women, other races and outside the rural US. We assessed whether, in individuals with low income, there is an association between self-mastery/resilience and either blood pressure or depressive symptoms that is different from the association seen in individuals with higher income. Data were obtained from 1353 older men and women participants of the International Mobility in Aging Study (IMIAS). Across 3 countries and 4 sites, higher self-mastery/resilience was associated with lower depressive symptoms in both low and high income groups. In low income individuals from Saint-Hyacinthe, Québec, higher self-mastery/resilience was associated with both higher mean systolic blood pressure (n = 240, β = 0.135, p ≤ 0.05) and higher mean diastolic blood pressure (n = 240, β = 0.241, p ≤ 0.0001). In the high income group of Saint-Hyacinthe, no such associations were observed. The findings in the Saint-Hyacinthe cohort (but not the other settings), are consistent with the John Henry hypothesis, and demonstrates this effect extends beyond a rural African American population. This finding indicates that in certain populations, the positive psychological effects of resilience come with a cost to physical health.

John Henryism and Perceived Health among Hemodialysis Patients in a Multiracial Brazilian Population: the PROHEMO

Purpose

John Henryism (JH) is a strong behavioral predisposition to engage in high-effort coping with difficult socioenvironmental stressors. We investigated associations between JH and perceived general health (GH) among maintenance hemodialysis (MHD) patients in a multiracial Brazilian population.

Design

The 12-item John Henryism Acting Coping (JHAC) Scale was completed by 525 patients enrolled in The Prospective Study of the Prognosis of Hemodialysis Patients (PROHEMO) in Salvador (Bahia) Brazil. JH scores could range from 12 to 60. The low and high JH groups were determined by a median split (<52 vs ≥52). The 36-Item Short Form Health Survey was used to determine GH score (range 0-100; higher means better health). Linear regression with extensive adjustments was used to test associations.

Results

Mean age was 48.3±13.7 years; 38.7% were female; 11.4% were White, 29.1% were Black and 59.4% were mixed race. JH was positively associated with higher GH in the whole sample (adjusted difference [AdjDif]=7.14, 95% CI= 2.98, 11.3) and similarly in men and women. A strong positive association between JH and GH was observed in non-Whites but not in Whites; (AdjDif in Blacks =16.4, 95% CI=8.37, 24.4). Also, a strong positive association between JH and GH was observed for patients aged <60 years (AdjDif =9.04, 95% CI = 4.46, 13.6) but not for older patients.

Conclusions

The results indicate that MHD patients engaged in high-effort coping with socioenvironmental stressors as demonstrated by high JH tend to feel more positively about their overall health. This seems to be especially the case for non-White and younger patients.

The double edge sword of John Henryism: Impact on patients' health in the People's Republic of China

The People's Republic of China has experienced extraordinary economic growth, which is associated with increases in chronic health stressors. We examined the impact of John Henryism-a coping mechanism-on various health indicators in a sample of patients (n = 642) in China. John Henryism significantly related to increased medical adherence (B=.03,p<.001) and health-promotional behaviors (B=.02,p<.001). John Henryism predicted several indicators of psychological health through social support. John Henryism was also related to increased alcoholism (B=.04,p<.05). The findings highlight the complexity and paradoxical implications of John Henryism on health. Implications are discussed in relation to China's epidemiological and age demographic shifts.

John Henryism, Gender and Self-reported Health Among Roma/Gypsies in Serbia

We describe how self-reported health (SRH) varies with gender and John Henryism (a strong behavioral predisposition to engage in high-effort coping to overcome adversity) in a low income sample of Serbian Roma. Data were collected in 2016 in several Roma settlements around Belgrade, Serbia. The sample consisted of 90 men and 112 women. In addition to John Henryism (JH), measured by a Serbian version of the John Henryism Scale, demographic data and data on SRH and family relationships dynamics were collected. SRH was positively correlated with age and JH, and negatively correlated with a history of chronic disease. Roma males and females differed significantly on JH and a number of other variables. For Roma women, multiple regression analyses revealed that a history of chronic disease, unemployment, age and daily stress level were negatively associated with SRH, while JH, SES and harmonious relationships with one's family/children were positively associated with SRH. For Roma men, there was no association between JH and SRH, but older age, being on welfare, a diagnosis of hypertension and extended family disputes were associated with poorer SRH. Hence, despite economic disadvantage and social exclusion from mainstream society, some Roma report good health and the ability to cope actively with economic disadvantage and social exclusion. This study adds to the literature on the cross-cultural relevance of JH theory for understanding health variations within socially and economically marginalized populations.

Socioeconomic position, John Henryism, and incidence of acute myocardial infarction in Finnish men

Previous cross-sectional studies examining whether John Henryism (JH), or high-effort coping with socioeconomic adversity, potentiates the inverse association between socioeconomic position (SEP) and cardiovascular health have focused mainly on hypertension in African Americans. We conducted the first longitudinal test of this hypothesis on incident acute myocardial infarction (AMI) using data from the Kuopio Ischemic Heart Disease Risk Factor Study in Finland (N = 1405 men, 42-60 years). We hypothesized that the expected inverse gradient between SEP and AMI risk would be stronger for men scoring high on JH than for those scoring low. John Henryism was measured by a Finnish version of the JH Scale for Active Coping. Four different measures of SEP were used: childhood SEP, education, income, and occupation. AMI hazard ratios (HR) by SEP and JH were estimated using COX proportional hazard models, before and after adjustment for study covariates. 205 cases of AMI occurred over a median of 14.9 years. Men employed in lower rank (farmer, blue-collar) occupations who scored high on JH had significantly higher age-adjusted risks of AMI than men in higher rank (white-collar) occupations (HR = 3.14, 95% CI: 1.65-5.98 for blue collar; HR = 2.33, 95% CI: 1.04-5.22 for farmers) who also scored high on JH. No socioeconomic differences in AMI were observed for men who scored low on JH (HR = 1.36, 95% CI: 0.74-2.47 for blue collar; HR = 0.93, 95% CI: 0.59-1.48 for farmers; p = 0.002 for the SEP × JH interaction). These findings persisted after adjustment for sociodemographic, behavioral, and biological factors. Results for other SEP measures were in the same direction, but did not reach statistical significance. Repetitive high-effort coping with adversity (John Henryism) was independently associated with increased risk for AMI in Finnish men, underscoring the potential relevance of the John Henryism hypothesis to CVD outcomes other than hypertension and to populations other than African Americans.

Examining Cultural Correlates of Active Coping Among African American Female Trauma Survivors

African American women are at a greater risk for exposure to multiple traumatic events and are less likely to seek mental health services than White women. Many women report avoidant and passive coping strategies placing them at an increased risk for lower psychological adjustment. Thus, the purpose of the current study is to examine the role of culturally relevant factors such as spirituality, self-esteem, and social support as significant correlates of John Henryism Active Coping among African American female trauma survivors. The study utilized secondary data from the B-WISE project (Black Women in a Study of Epidemics) with a sample of 161 community-based African American women with a self-reported history of trauma. Results indicate that participants with higher self-esteem and existential well-being were more likely to cope actively with daily life stressors. However, socio-demographics were not significant correlates of John Henryism Active Coping at the multivariate level. Implications for clinical practice are discussed along with the Strong Black Woman (SBW) ideology, which may explain over-reporting of positive attributes such as self-esteem and existential well-being. Limitations of the study and directions of future research are also discussed.

Socioeconomic status, John Henryism and blood pressure among African-Americans in the Jackson Heart Study

John Henryism connotes a strong behavioral predisposition to engage in effortful, active coping with difficult social and economic stressors. This behavioral predisposition is measured by the 12 item John Henryism Scale for Active Coping (JHAC). The John Henry hypothesis predicts that the well-known inverse socioeconomic status (SES)-blood pressure association will be stronger among persons who score high rather than low on the JHAC. We tested this hypothesis in a large African American cohort using baseline data from the Jackson Heart Study. Unlike previous studies, we used multiple indicators of SES: income, education, occupation, childhood SES and cumulative SES. Because the hypothesis is most relevant for adults still in the labor force, we excluded retired participants, yielding a sample size of 3978. Gender-specific Poisson regression models for hypertension adjusting for age, John Henryism, SES, and a John Henryism-SES interaction term, were fit to examine associations. Separate models were fit for each SES indicator. We found some evidence that John Henryism modified the association between income and hypertension in men: low income was associated with higher prevalence of hypertension in men who scored high on John Henryism (prevalence ratio (PR) for low vs. high income tertile 1.12), but with lower hypertension prevalence among men who scored low on John Henryism (PR 0.85, one sided P value for multiplicative interaction <0.05). For women, the association of low income with higher hypertension prevalence was stronger at lower than higher levels of John Henryism (PR 1.27 and 1.06 at low and high levels of John Henryism respectively, P value<0.05). There was no evidence that John Henryism modified the associations of hypertension with other SES indicators in men or women. The modest support of the John Henryism Hypothesis in men only, adds to the literature on this subject, but underscores questions regarding the gender, spatial, socioeconomic and historical contexts in which the hypothesis is valid.

Racial Discrimination and Depressive Symptoms Among African-American Men: The Mediating and Moderating Roles of Masculine Self-Reliance and John Henryism

Despite well-documented associations between everyday racial discrimination and depression, mechanisms underlying this association among African-American men are poorly understood. Guided by the Transactional Model of Stress and Coping, we frame masculine self-reliance and John Henryism as appraisal mechanisms that influence the relationship between racial discrimination, a source of significant psychosocial stress, and depressive symptoms among African-American men. We also investigate whether the proposed relationships vary by reported discrimination-specific coping responses. Participants were 478 African-American men recruited primarily from barbershops in the West and South regions of the United States. Multiple linear regression and Sobel-Goodman mediation analyses were used to examine direct and mediated associations between our study variables. Racial discrimination and masculine self-reliance were positively associated with depressive symptoms, though the latter only among active responders. John Henryism was negatively associated with depressive symptoms, mediated the masculine self-reliance-depressive symptom relationship, and among active responders moderated the racial discrimination-depressive symptoms relationship. Though structural interventions are essential, clinical interventions designed to mitigate the mental health consequences of racial discrimination among African-American men should leverage masculine self-reliance and active coping mechanisms.