Glover, LáShauntá

BACKGROUND: For reasons not fully understood, Black adults experience more socioeconomic disadvantages (SED) than their White counterparts, as well as earlier onset and greater mortality from heart failure (HF). The John Henryism hypothesis predicts that repeated high-effort coping, that is, John Henryism (JH), with socioeconomic adversity can accelerate cardiovascular aging, thus increasing the risk for HF. METHODS: The analysis sample consisted of participants from the JHS (Jackson Heart Study), a cohort of Black adults from the Jackson, Mississippi Metropolitan area. The analysis sample included participants with no cardiovascular disease at baseline (2000–2004) with complete SED and JH scores. Indicators of SED included low household income, low educational attainment, and low maternal educational attainment scores. JH scores (0–36) were categorized as low (<28), moderate (29–32), and high (>32). Effect moderation of JH in the SED and incident HF association was assessed using interaction terms and stratification. Proportional hazards regression determined the hazard ratio and 95% CI, and models adjusted for age, sex, and established lifestyle risk factors. RESULTS: Among 1704 participants (mean age: 52.15 years, 64.3% female), 100 HF events occurred by 2016 (mean follow-up, 10 years). A statistically significant interaction between income and JH was observed for incident HF ( P =0.04). For every 1-unit increase in income disadvantage score, the risk of HF increased 2-fold among those with high JH (hazard ratio, 2.00 [95% CI, 1.39–2.86]) after full adjustment. Among participants with low JH, the corresponding unadjusted association was hazard ratio, 1.40 [95% CI, 1.04–1.90], but this association attenuated after adjusting for age and sex (hazard ratio, 1.19 [95% CI, 0.87–1.63]). CONCLUSIONS: The association between income disadvantage and HF differed by JH level. Because SED and high JH tend to co-occur, both should be considered in future research aiming to decrease the burden of HF in Black Americans.

Background Associations between depression, incident heart failure (HF), and mortality are well documented in predominately White samples. Yet, there are sparse data from racial minorities, including those who are women, and depression is underrecognized and undertreated in the Black population. Thus, we examined associations between baseline depressive symptoms, incident HF, and all‐cause mortality across 10 years. Methods and Results We included Jackson Heart Study (JHS) participants with no history of HF at baseline (n=2651; 63.9% women; median age, 53 years). Cox proportional hazards models tested if the risk of incident HF or mortality differed by clinically significant depressive symptoms at baseline (Center for Epidemiological Studies–Depression scores ≥16 versus <16). Models were conducted in the full sample and by sex, with hierarchical adjustment for demographics, HF risk factors, and lifestyle factors. Overall, 538 adults (20.3%) reported high depressive symptoms (71.0% were women), and there were 181 cases of HF (cumulative incidence, 0.06%). In the unadjusted model, individuals with high depressive symptoms had a 43% greater risk of HF ( P =0.035). The association remained with demographic and HF risk factors but was attenuated by lifestyle factors. All‐cause mortality was similar regardless of depressive symptoms. By sex, the unadjusted association between depressive symptoms and HF remained for women only ( P =0.039). The fully adjusted model showed a 53% greater risk of HF for women with high depressive symptoms ( P =0.043). Conclusions Among Black adults, there were sex‐specific associations between depressive symptoms and incident HF, with greater risk among women. Sex‐specific management of depression may be needed to improve cardiovascular outcomes.

Introduction: Compared to other racial and ethnic groups, African Americans experience greater negative psychosocial factors (depression, stress), which are related to increased risk of cardiovascular disease (CVD). Little research has examined the association of positive psychosocial factors (optimism) with cardiovascular health in this population. Using the Jackson Heart Study (JHS) data, we examined the association of optimism with the American Heart Association Life’s Simple 7 TM (LS7), a measure of seven metrics that assesses a person’s cardiovascular health. Hypothesis: Higher levels of optimism are positively associated with individual LS7 metrics, and positively associated with the total LS7 score. Methods: We evaluated cross-sectional associations of optimism with each LS7 metric [cigarette smoking, physical activity, diet, body mass index (BMI), blood pressure, cholesterol, glucose] and with a composite LS7 score among 4,761 participants, 21-95 years old (women=3,070; men=1,691) enrolled in the JHS, a single-site, community-based cohort of African Americans residing in Jackson, MS. Optimism was measured in tertiles (low, moderate, high) to examine threshold effects. Each LS7 metric was classified as poor, intermediate, and ideal. LS7 metrics were also summed to create a total continuous score (0-13) categorized in tertiles (low, moderate, high). Multinomial logistic regression estimated the odds ratios (OR, 95% confidence interval-CI) of intermediate (vs. poor) and ideal (vs. poor) LS7 metric by levels of optimism. Multinomial regression also estimated the odds of moderate (vs. low) or high (vs. low) total LS7 score by optimism. Models adjusted for demographics, SES, and depressive symptoms. Results: Descriptive findings showed that participants who reported high optimism had ideal physical activity, nutrition, smoking, blood pressure, glucose and high total LS7 score (all p<0.01). After adjustment for age, sex, education, income, marital status, and insurance status, participants who reported high (vs. low) optimism had a 39% increased odds of having ideal (vs. poor) physical activity (OR 1.39; 95% CI 1.10-1.76) and a 33% increased odds of having ideal (vs. poor) smoking (OR 1.33; 95% CI 1.02-1.73). Participants who reported high (vs. low) optimism had a 34% greater odds of having a high (vs. low) total LS7 score (OR 1.34 95% CI 1.03-1.74) after full adjustment. Conclusion: Optimism is associated with ideal physical activity and ideal smoking, which is important for promoting cardiovascular health and reducing the risk of CVD among African Americans in this sample.