Racial, ethnic and nativity inequalities in gestational diabetes mellitus: The role of racial discrimination

A systematic review of the relationship between neighborhood stressors, discrimination, and cardiometabolic outcomes during pregnancy

Cardiometabolic outcomes during pregnancy, including hypertensive disorders of pregnancy (HDP) and gestational diabetes, disproportionately affect racial and/or ethnic minority groups in the United States. These disparities are not fully explained by traditional risk factors, but race-related psychosocial stressors such as perceived neighborhood stressors and discrimination (PNSD) may contribute to adverse health outcomes. This systematic review examined the literature on the impact of PNSD on HDP and gestational diabetes. A comprehensive search of PubMed, PsycINFO, Embase, Web of Science, and CINAHL identified 10 eligible studies: seven cohort and three cross-sectional studies. Five studies reported significant associations between PNSD and increased risk for cardiometabolic outcomes during pregnancy (HDP-1 study, gestational diabetes-3 studies, both hypertension and diabetes during pregnancy-1 study). The included studies demonstrated good methodological quality. These findings suggest that PNSD may be associated with cardiometabolic outcomes during pregnancy, but further research is needed, particularly on perceived neighborhood stressors.

Racial/Ethnic and Nativity Disparities in Gestational Diabetes Mellitus, United States 2018-2021

BACKGROUND

Gestational diabetes mellitus (GDM) is associated with adverse pregnancy and birth complications. Asian populations have the highest risk of GDM, with even greater risk among foreign-born (FB) residents. Socio-political factors, such as heightened anti-Asian racism and travel restrictions during COVID19 may have further increased their risk of GDM. Our study sought to examine the associations between race/ethnicity, nativity status, and GDM rate and changes during COVID19.

METHODS

We used the US National Center for Health Statistics natality administrative data (N = 14,219,719). We estimated GDM and birth rates by race/ethnicity (Asian non-Hispanic [NH], Native Hawaiian/Pacific Islander NH, American Indian and Alaska Native NH, Black NH, White NH, Multiracial NH, and Hispanic/Latina) and nativity status (US-born, Foreign-born). Race/ethnicity was evaluated as a social construct for racial discrimination and nativity was evaluated as a proxy for acculturation-related risk factors. We used multivariable robust Poisson regressions to estimate GDM rates per 100 live births for each racial/ethnic group pre-COVID19 (2018-2019) and during COVID19 (2021) by FB status, adjusting for socioeconomic and major pregnancy risk factors.

RESULTS

In adjusted models, both Asian NH and foreign-born persons had higher rates of GDM compared to White NH (rate ratio [RR]: 2.02, 95% confidence interval [CI]: 2.01, 2.04) and US-born (RR; 1.33, 95% CI: 1.32, 1.34) persons, respectively. Overall GDM rates increased significantly during COVID19 (RR: 1.18, 95% CI: 1.17, 1.18), with Asian US- and foreign-born persons experiencing the greatest absolute increase (US-born: +2.5, 95% CI: 2.4, 2.6; foreign-born: +3.6, 95% CI: 3.5, 3.6) compared to other racial/ethnic groups (US-born: range +1.3-1.7, foreign-born range: +0.5-2.9). Disaggregated by Asian ethnicity, Chinese and Vietnamese persons had the highest GDM rates overall and the greatest increase during COVID19.

CONCLUSION

We found significant disparities in GDM rates by race/ethnicity and nativity status between 2018 and 2021, with Asian and foreign-born persons having the highest rates of GDM. Investigation into potential socio-political and other contributing factors of reproductive health inequities during COVID19 may help explain these disparities.

Double burden of gestational diabetes and pregnancy-induced hypertension in Ethiopia: A systematic review and meta-analysis of observational studies

BACKGROUND

The coexistence of gestational diabetes mellitus (GDM) and pregnancy-induced hypertension (PIH) amplifies the risk of maternal and perinatal mortality and complications, leading to more severe adverse pregnancy outcomes. This systematic review and meta-analysis aimed to assess the double burden of GDM and PIH (GDM/PIH) among pregnant women in Ethiopia.

METHODS

A comprehensive systematic search was conducted in the databases of PubMed, Cochrane Library, Science Direct, Embase, and Google Scholar, covering studies published up to May 14, 2023. The analysis was carried out using JBI SUMARI and STATA version 17. Subgroup analyses were computed to demonstrate heterogeneity. A sensitivity analysis was performed to examine the impact of a single study on the overall estimate. Publication bias was assessed through inspection of the funnel plot and statistically using Egger's regression test.

RESULT

Of 168 retrieved studies, 15 with a total of 6391 participants were deemed eligible. The pooled prevalence of GDM/PIH co-occurrence among pregnant women in Ethiopia was 3.76% (95% CI; 3.29-4.24). No publication bias was reported, and sensitivity analysis suggested that excluded studies did not significantly alter the pooled prevalence of GDM/PIH co-occurrence. A statistically significant association between GDM and PIH was observed, with pregnant women with GDM being three times more likely to develop PIH compared to those without GDM (OR = 3.44; 95% CI; 2.15-5.53).

CONCLUSION

This systematic review and meta-analysis revealed a high dual burden of GDM and PIH among pregnant women in Ethiopia, with a significant association between the two morbidities. These findings emphasize the critical need for comprehensive antenatal care programs in Ethiopia to adequately address and monitor both GDM and PIH for improved maternal and perinatal health outcomes.

Racial/Ethnic Discrimination and Cardiometabolic Diseases: A Systematic Review

INTRODUCTION

Racial discrimination has been identified as a risk factor for cardiometabolic diseases, the leading cause of morbidity and mortality among racial/ethnic minority groups; however, there is no synthesis of current knowledge on the association between discrimination and cardiometabolic diseases. The objective of this systematic review was to summarize evidence linking racial/ethnic discrimination and cardiometabolic diseases.

METHODS

The review was conducted based on studies identified via electronic searches of 5 databases (PubMed, Google Scholar, WorldWideScience.org, ResearchGate and Microsoft Academic) using terms related to discrimination and cardiometabolic disease.

RESULTS

Of the 123 eligible studies included in the review, 87 were cross-sectional, 25 longitudinal, 8 quasi-experimental, 2 randomized controlled trials and 1 case-control. Cardiometabolic disease outcomes discussed were hypertension (n = 46), cardiovascular disease (n = 40), obesity (n = 12), diabetes (n = 11), metabolic syndrome (n = 9), and chronic kidney disease (n = 5). Although a variety of discrimination measures was employed across the studies, the Everyday Discrimination Scale was used most often (32.5%). African Americans/Blacks were the most frequently studied racial/ethnic group (53.1%), and American Indians the least (0.02%). Significant associations between racial/ethnic discrimination and cardiometabolic disease were found in 73.2% of the studies.

DISCUSSION

Racial/ethnic discrimination is positively associated with increased risk of cardiometabolic disease and higher levels of cardiometabolic biomarkers. Identifying racial/ethnic discrimination as a potential key contributor to the health inequities associated with cardiometabolic diseases is important for addressing the significant burden borne by racial/ethnic minorities.

Racial/Ethnic and Nativity Inequalities in Gestational Diabetes Mellitus: The Role of Psychosocial Stressors

INTRODUCTION

Racial/ethnic and nativity disparities in gestational diabetes mellitus (GDM) persist in the United States. Identified factors associated with these differences do not fully explain them. Research has recognized psychosocial stress as a potentially modifiable risk factor for GDM.

METHODS

We used New York City Pregnancy Risk and Assessment Monitoring System data (2009-2014) linked with birth certificate items (n = 7,632) in bivariate and multivariate analyses to examine associations between 12 psychosocial stressors (modeled three ways: individual stressors, grouped stressors, stress constructs) and GDM across race/ethnicity and nativity, and if stressors explain racial/ethnic/nativity differences in GDM.

RESULTS

U.S. and foreign-born Black and Hispanic women reported higher stressors relative to U.S.-born White women. In fully adjusted models, the financial stress construct was associated with a 51% increased adjusted risk of GDM, and adding all stressors doubled the risk. Psychosocial stressors did not explain the elevated risk of GDM among foreign-born Black (adjusted risk ratio, 2.18; 95% confidence interval, 1.53-3.11), Hispanic (adjusted risk ratio, 1.57; 95% confidence interval, 1.10-2.25), or Asian/Pacific Islander (adjusted risk ratio, 4.10; 95% confidence interval, 3.04-5.52) women compared with U.S.-born White women.

CONCLUSIONS

Historically minoritized racial/ethnic and immigrant women have an increased risk of psychosocial stressors and GDM relative to U.S.-born White women. Although financial and all stressors predicted higher risk of GDM, they did not explain the increased risk of GDM among immigrant women and women from minoritized racial/ethnic groups. Further examination into racial/ethnic and nativity inequalities in stress exposure and rates of GDM is warranted to promote healthier pregnancies and birth outcomes.

Association of cumulative social risk and gestational diabetes mellitus in the US, 2007-2018

AIMS

Little is known regarding the association of multiple social risk factors and gestational diabetes mellitus (GDM).

METHODS

We analyzed the 2007-2018 National Health and Nutrition Examination Surveys including 10,439 women aged ≥20 years (8 % with history of GDM). We created a cumulative social risk score (CSR) by adding scores assigned to each of the following: race/ethnicity, citizenship status and country of birth, education, and family income (score of 0 used as reference group). Using logistic regression, we assessed the associations of individual social risk factors (education, income, race/ethnicity and citizenship status) and CSR score with GDM, adjusting for age, parity, insurance status, care access, smoking, diet, physical activity, and body mass index.

RESULTS

Among individual social risk factors, being a non-U.S. citizen (OR:1.51, 95% CI: 1.06-2.15) or belonging to a minority racial/ethnic group (OR:1.30, 95% CI: 1.04-1.59) was significantly associated with a greater odds of GDM. When examining the combined effects of social risk factors, a CSR score ≥3 was associated with an increased odds of GDM (OR:1.64, 95% CI: 1.22-2.1).

CONCLUSIONS

Women with a greater burden of social risk factors are more likely to have GDM, thus should be the focus of interventions to prevent and treat GDM.

Association Between Serum Ferritin Concentration and Risk of Adverse Maternal and Fetal Pregnancy Outcomes: A Retrospective Cohort Study

OBJECTIVE

This study evaluated the associations of serum ferritin (SF) concentration during pregnancy with the risk of adverse maternal and fetal pregnancy outcomes.

METHODS

We conducted a retrospective study of 2327 pregnant women from 2015 to 2020 in Guangdong, China. SF concentrations were measured at 16-18th and 28-32th week of gestation. Logistic regression models were applied to estimate the association between SF concentration and the risk of adverse pregnancy outcomes.

RESULTS

After multivariable adjustment, the odds ratio (OR) of the highest quartile of SF concentration at 16-18th week of gestation was 1.43 (95% confidence interval [CI]: 1.09, 1.89) for gestational diabetes mellitus (GDM) and 1.79 (95% CI: 1.15, 2.79) for small for gestational age (SGA) when compared with the lowest quartile. At 28-32th week of gestation compared with the lowest quartile, women with SF in the highest quartile had an increased risk of SGA (OR: 1.62; 95% CI: 1.01, 2.62). Moreover, the lowest quartile of SF concentration decreased risk of SGA by 90% (95% CI: 0.01, 0.80) when compared with the highest quartile among pregnancy women with GDM.

CONCLUSION

Elevated SF concentrations increased the risk of GDM and SGA during pregnancy. Maintaining an appropriately low level of maternal SF at 28-32th week of gestation in women with GDM could reduce the risk of SGA.