Shervin Assari

Shervin Assari
Charles R. Drew University of Medicine and Science | CDU · Departments of Family Medicine and Public Health

MD, MPH
https://www.diminishedreturns.org

About

594
Publications
81,951
Reads
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13,586
Citations
Citations since 2016
402 Research Items
12121 Citations
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Introduction
Associate Professor of Family Medicine and Urban Public Health, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States Formerly at University of Michigan and UCLA Fellow, NYAM, AAHB, and SBM, Former Committee Chair, ACE and AAHB Former President, SAPHIR
Additional affiliations
September 2017 - November 2017
University of Michigan
Position
  • Professor (Assistant)
November 2014 - December 2016
University of Michigan
Position
  • Faculty Member
March 2013 - March 2015
University of Michigan
Position
  • PostDoc Position

Publications

Publications (594)
Article
Full-text available
Background: Based on the Minorities' Diminished Returns (MDRs) framework, indicators of high socioeconomic status (SES), such as high maternal educational attainment, show weaker protective effects on various developmental, behavioral, and health outcomes for Black than White families. As a result of these MDRs, families and individuals with high...
Article
Full-text available
Background: Based on the Minorities' Diminished Returns (MDRs) framework, indicators of high socioeconomic status, such as higher family income, show weaker protective effects on various developmental, behavioral, and health outcomes for Black than White families. As a result of these MDRs, Black families who access education and income still repo...
Preprint
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Background. Socioeconomic status (SES) indicators such as education and income influence population health including but not limited to self-rated health (SRH). Based on Minorities' Diminished Returns (MDRs), however, we observe weaker health effects SES indicators for non-Hispanic Blacks compared to non-Hispanic Whites. While such diminished retur...
Article
There is growing evidence on the negative effects of perceived discrimination on health outcomes and their interactions with indicators of socioeconomic status. However, less has been studied on whether income and education lead individuals of a different race to encounter different discriminatory experiences in their lifetime. Using data from the...
Article
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One of the major contributing factors to the Black-White achievement gap is school context. While many factors can affect academic achievement amongst Black youth, school climate and inter-racial relations are among the root causes which impact Black students’ development. In this qualitative study, we conducted secondary analysis of existing data...
Article
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Identifying and addressing systemic racial oppression in the education system is a key component in confronting pervasive health and economic disparities for Black students. In this qualitative study, we conducted secondary analysis of existing data. Transcripts of interviews and focus group discussions belonged to 21 Black students in a charter sc...
Article
Objective To determine the prevalence and sociodemographic correlates of cyberbullying victimization and perpetration among a racially/ethnically and socioeconomically diverse population-based sample of 11-12-year-old early adolescents. Methods We analyzed cross-sectional data from the Adolescent Brain Cognitive Development (ABCD) Study (Year 2; N...
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Objective: To determine sociodemographic correlates of problematic screen use (social media, video games, mobile phones) among a racially/ethnically and socioeconomically diverse population-based sample of 10-14-year-old early adolescents. Study design: We analyzed cross-sectional data from the Adolescent Brain Cognitive Development Study (Year...
Article
Background: Underserved ethnic minorities with psychiatric disorders are at an increased risk of COVID-19. This study aims to examine the effectiveness of one-to-one counseling on COVID-19 vaccination and vaccination readiness among underserved African American and Latinx individuals with mental illnesses and adult caregivers of children with ment...
Article
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We took a risk and resilience approach to investigating how witnessing physical violence influences adolescent violent behaviors overtime. We proposed efficacy to avoid violence as a major path of influence in this negative trajectory of adolescent development. We also focus on the protective roles of parenting behaviors for African American boys l...
Article
Introduction: While socioeconomic status (SES) indicators such as household income are known to be associated with larger cortical surface area, recent research on Marginalization-related Diminished Returns (MDRs) suggests that family SES indicators such as household income may have weaker effects on brain function and structure for non-White (marg...
Article
Objectives: There is an increasing amount of research on Health-Related Quality of Life (HRQoL) among older adults in the U.S. However, under-resourced and underserved African American and Latino older adults remain underrepresented in research and interventional studies, resulting in limited data on their quality of life and health promotion prac...
Article
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Background Contaminated toothbrushes can cause several oral and systemic illnesses. This study aimed to identify the most rapid, effective, and affordable method for toothbrush decontamination. In addition, the most prevalent bacterial species colonizing toothbrushes were determined. Methodology Toothbrushes were collected after two weeks of use by...
Article
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Objectives This study uses a theoretical model to explore (a) emergency department (ED) utilization, (b) hospital admissions, and (c) office-based physician visits among sample of under-resourced African American and Latino older adults. Methods Nine hundred five African American and Latino older adults from an under-resourced urban community of S...
Article
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While studies have indicated an association between socioeconomic status (SES) and neuroimaging measures, weaker SES effects are shown for Blacks than Whites. This is, in part, due to processes such as stratification, racism, minoritization, and othering of Black people in the United States. However, less is known about Latino youth. This study had...
Article
Background: Perceived discrimination (PD) is a risk factor of suicidal thoughts and behaviors (STB) for children, youth, and adults. However, it is unknown whether the association between PD and STB frequency differs between African American (AA) and Non-Hispanic White children. Objectives: In this study, we compared AA and non-Latino White childre...
Article
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Background: While socioeconomic status (SES) indicators such as parental educational attainment show robust associations with health behaviors such as substance use, the protective effects of these indicators may differ across racial groups. This phenomenon of weaker associations between SES indicators and health outcomes for marginalized and minor...
Article
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Socioeconomic status (SES) influences health, behaviors, and well-being. Emerging information suggests that SES effects on health may be in part be due to SES effects on brain development. We have conducted a mini review of U.S.-based studies examining SES effects on brain development to synthesize the existing knowledge on what brain structures an...
Article
Introduction: Low stress is one of many plausible mechanisms that may explain the health effects of educational attainment. However, Marginalization-related Diminished Returns (MDRs) refer to the weaker health effects of educational attainment for marginalized, compared to privileged, groups. We are unaware of any previous studies that have compare...
Article
Background Neighbourhood tobacco retail access may influence adolescent tobacco use. In India, we examined the association between neighbourhood tobacco retail access and cognitive risks for tobacco use during early adolescence. Methods In 2019–2020, a population-based sample (n=1759) of adolescents aged 13–15 years was surveyed from 52 neighbourh...
Article
Background: Lower levels of stress are one of many plausible mechanisms that may explain the health effects of educational attainment. Minorities’ Diminished Returns, however, are defined as systemically weaker health effects of educational attainment for Blacks compared to Whites. We are, however, unaware of previous studies on the differential ef...
Article
Background: Limited knowledge exists on the role of Perceived Discrimination (PD) as a social determinant and risk factor that influences children’s brain development and whether this association is different for male and female children. Aim: To examine the association between PD, the superior frontal cortex, and sex differences in a national samp...
Article
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Introduction: While previous studies have indicated an association between socioeconomic status (SES) and children’s neuroimaging measures, weaker SES effects are shown for Black than White families. This is, in part, due to processes such as stratification, racism, marginalization, and othering of Black people in the US, which act as barriers to t...
Article
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Introduction: Socioeconomic status (SES) indicators, such as parental education and household income, are associated with the thickness of various cortical areas. However, less is known about the parahippocampal region. Additionally, more research is required regarding how the correlation between SES indicators and cortical thickness differs among...
Article
Background: While socioeconomic status (SES) indicators such as educational attainment and employment are among the major drivers of health and illness, the health returns of SES indicators may differ across racial groups. Built on Marginalization related Diminished Returns framework (MDRs) that refers to weaker health effects of SES indicators fo...
Article
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Background The burden of fatal police violence is an urgent public health crisis in the USA. Mounting evidence shows that deaths at the hands of the police disproportionately impact people of certain races and ethnicities, pointing to systemic racism in policing. Recent high-profile killings by police in the USA have prompted calls for more extensi...
Article
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Introduction: A growing body of research has shown a diminished association between socioeconomic status (SES) indicators and a wide range of neuroimaging indicators for racial and ethnic minorities compared to majority groups. However, less is known about these effects for resting-state functional connectivity between various brain networks. Pur...
Article
Critical period, social mobility, and social accumulation are three hypotheses that may explain how educational mobility impacts health. Thus far, there is little evidence on how these processes are associated with biological aging as measured by telomere length. Using cross-sectional data from the 2008 Health and Retirement Study, we examined the...
Article
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Introduction: Although research has established a link between socioeconomic status (SES) and neuroimaging measures, weaker SES effects are shown for Blacks than Whites. This is, in part, due to processes such as stratification, racism, mineralization, and othering of Black people in the US. Purpose: This study had two aims: First to test the assoc...
Article
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To the Editor In their article, Nagata and colleagues¹ used adolescent brain cognitive development (ABCD) data to show that high income, as a proxy of socioeconomic status (SES), was associated with higher rather than lower perceived racial discrimination (PRD) in Black children aged 10 to 11 years, a pattern that was absent for other racial and et...
Article
Background Increasing severity of serious illness requires individuals to prepare and make decisions to mitigate adverse consequences of their illness. In a racial and ethnically diverse sample, the current study examined preparedness for serious illness among adults in California. Methods This cross-sectional study used data from the Survey of Ca...
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Introduction: Research shows that race, ethnicity, and socioeconomic status (SES) have multiplicative rather than additive effects on the risk of cigarette smoking. In a national sample of American adult smokers, this study tested (1) the effects of race, ethnicity, educational attainment, and poverty status on first cigarette flavor in a national...
Article
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Objectives: To (1) describe the level of hope, optimism, and gratitude in a sample of minority health professional college students. (2) To examine the association between hope, optimism, and gratitude with wellbeing domains. Participants: One hundred and thirty-two (n = 132) college students from the Nursing, Medicine, and Allied Health programs....
Article
Purpose Obesity is a public health issue in the United States (US), that disproportionately affects marginalized group members. Stressful life events (SLE) have been implicated as an obesogenic risk factor. However, there is scant research examining of the role of nativity status and length of residence in the relationship between SLE and obesity....
Article
Background: According to the Minorities’ Diminished Returns (MDRs), highly educated African American (AA) and Latino people remain at high risk of tobacco use. One hypothesis suggests that this high risk of tobacco use stems from AA and Latino people remaining unrealistically optimistic, resulting in the risks of tobacco use being discounted. Aims:...
Article
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Educational attainment is among the most substantial protective factors against cigarette smoking, including during pregnancy. Although Minorities’ Diminished Returns (MDRs) of educational attainment, defined as weaker protective effect of education for racial and ethnic minority groups compared to Non-Hispanic Whites, has been demonstrated in prev...
Article
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Chronic low back pain is one of the most common, poorly understood, and potentially disabling chronic pain conditions from which older adults suffer. The existing low back pain research has relied almost exclusively on White/Caucasian participant samples. This study examines the correlates of chronic low back pain among a sample of underserved urba...
Article
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Aims: Important differences have been shown in alcohol drinking and cigarette smoking prevalence, patterns and consequences among individuals from different racial backgrounds. Alcohol and nicotine are often co-used, and the association between drinking and smoking may differ between racial groups-a question explored in the present study. Methods...
Article
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Background aim: To examine racial/ethnic variations in the effect of parents' subjective neighborhood safety on children's cognitive performance. Methods: This cross-sectional study included 10,027 children from the Adolescent Brain Cognitive Development (ABCD) study. The exposure variable was parents' subjective neighborhood safety. The outcome...
Article
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Intersectional research on childhood suicidality requires studies with a reliable and valid measure of suicidality, as well as a large sample size that shows some variability of suicidality across sex by race intersectional groups. Objectives: We aimed to investigate the feasibility of intersectionality research on childhood suicidality in the Ad...
Article
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Aim: This study tested sex differences in the association between hippocampal volume and working memory of a national sample of 9-10-year-old children in the US. As the hippocampus is functionally lateralized (especially in task-related activities), we explored the results for the right and the left hippocampus. Methods: This is a cross-sectiona...
Article
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Family conflict is known to operate as a major risk factor for children's suicidal thoughts and behaviors (STBs). However, it is unknown whether this effect is similar or different in Black and White children. Objectives: We compared Black and White children for the association between family conflict and STBs in a national sample of 9-10-year-ol...
Article
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Background: Recent studies have shown that parental educational attainment is associated with a larger superior temporal cortical surface area associated with higher reading ability in children. Simultaneously, the marginalization-related diminished returns (MDRs) framework suggests that, due to structural racism and social stratification, returns...
Article
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Introduction: Cerebellum cortex fractional anisotropy is a proxy of the integrity of the cerebellum cortex. However, less is known about how it is shaped by race and socioeconomic status (SES) indicators such as parental education and household income. Purpose: In a national sample of American pre-adolescents, this study had two aims: to test th...
Article
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Introduction. The Orbitofrontal Cortex (OFC) is a cortical structure that has implications in cognition, memory, reward anticipation, outcome evaluation, decision making, and learning. As such, OFC activity correlates with these cognitive brain abilities. Despite research suggesting race and socioeconomic status (SES) indicators such as parental ed...
Article
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To compare African American (AA) and non-Hispanic White men living in same residential areas for the associations between educational attainment and household income with perceived discrimination (PD). The National Survey of American Life (NSAL), a nationally representative study, included 1643 men who were either African American (n = 1271) or non...
Article
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Introduction: Although the putamen has a significant role in reward-seeking and motivated behaviors, including eating and food-seeking, minorities' diminished returns (MDRs) suggest that individual-level risk and protective factors have weaker effects for Non-Hispanic Black than Non-Hispanic White individuals. However, limited research is availabl...
Article
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Background Conflict in Iraq has displaced millions of refugee youth. Warzone exposure and forced migration have unique acute and chronic impacts on youth, yet effects of exposure may not be universal across diverse refugee groups. Understanding how youth from various refugee groups are differentially affected by stress and trauma is critical to all...
Article
Objective The primary purpose of this study was to analyze the completion of advance directives among African American and White adults and examine related factors, including demographics, socio-economic status, health conditions, and experiences with health care providers. Methods This study used data from the Survey of California Adults on Serio...
Article
Background and aims: While increased parental education reduces children's sleep problems, less is known about racial variation in such protection. According to Minorities' Diminished Returns (MDRs) theory, economic resources such as parental education show weaker health effects for minority groups such as Blacks and Latinos than non-Latino Whites...
Article
Background: Numerous studies have documented multilevel racial inequalities in health care utilization, medical treatment, and quality of care in minority populations in the United States. Palliative care for people with serious illness and hospice services for people approaching the end of life are no exception. It is also well established that H...
Article
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Background Academic stress can cause mental and physical problems and affect adolescents’ healthy development. This study aimed to estimate academic stress and explore its sources at the individual- and school levels among school-going adolescents in the city of Qazvin, Iran. Results This cross-sectional study used a stratified cluster sampling to...
Article
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Background: While clinical studies have documented sex differences in emotional, behavioral, and cognitive function of children with Attention Deficit and Hyperactive Disorder (ADHD), it is unknown if these sex differences are due to differences in referral and diagnosis or if they can be also seen when we screen a community sample for ADHD. If th...
Chapter
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Resilience, as a trait, process, or outcome, is an important factor to explain behavioral diversity between individuals and population groups in face of stress and adversity. Individuals and groups who can bounce back shortly after stressful events, experience less severe negative emotions (depression, anxiety), and manage situations through effici...
Article
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Background: Recent research on Marginalization-related Diminished Returns (MDRs) has documented weaker boosting effects of parental educational attainment on educational outcomes of Black than White students. Such MDRs of parental education seem to contribute to the Black-White achievement gap. Given that Blacks are more likely than Whites to atten...
Article
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Purpose: Although we know that racial and ethnic minorities are more likely to have mistrust in the health care system, very limited knowledge exists on correlates of such medical mistrust among this population. In this study, we explored correlates of medical mistrust in a representative sample of adults. Methods: We analyzed cross-sectional st...
Article
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Objectives: Existing epidemiologic information shows disparities in low-dose aspirin use by race. This study investigates the frequency, pattern, and correlates of both self- and clinician-prescribed low-dose aspirin use among underserved African Americans aged 55 years and older. Methods: This cross-sectional study conducted a comprehensive eva...
Article
Background: In the United States, due to residential segregation, racial minorities and families with low socioeconomic status (SES) tend to live in less safe neighborhoods than their White and high SES counterparts. As such, in the US, race and SES closely correlate with neighborhood safety. Due to the high chronicity of stress in unsafe neighbor...
Article
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Background and aims: Negative urgency reflects a specific facet of impulsivity and correlates with a wide range of health-related risk behaviors, including, but not limited to, problematic substance use. Negative urgency is also shaped by family socioeconomic position (SEP), such as parental educational attainment (PEA). This study aimed to explor...
Article
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Background: Considerable research has documented age-related growth in brain size as a marker of normal brain development. This is particularly important because brain volume has a significant role in overall cognitive performance. However, less research is done on whether age-related changes in the global brain volume differ across diverse racial...
Article
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Unrecognized and undertreated pain among older African Americans (AAs) is well-documented. This study explored the link between social, behavioral, and health correlates of pain and psychotropic as well as opioid-based medications in a sample of underserved 740 AA older adults. Almost 16% and 17% of participants used at least one psychotropic and o...
Article
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Aim: We compared the effects of parental education and household income on children's body mass index (BMI) in Hispanic White (HW) and non-Hispanic White (NHW) families. Methods: In this cross-sectional study, we borrowed data from the Adolescent Brain Cognitive Development (ABCD) study and analyzed data of 5100 children between the ages of 9 an...