Intergenerational Educational Attainment and Cardiometabolic Health in Latino Individuals Living in the United States

Beyond borders: A commentary on the benefit of promoting immigrant populations in genome-wide association studies

Immigrants are an important part of many high-income nations, in that they contribute to the sociocultural tapestry, economic well-being, and demographic diversity of their receiving countries and communities. Yet, genomic studies to date have generally focused on non-immigrant, European-ancestry populations. Although this approach has proven fruitful in discovering and validating genomic loci, within the context of racially/ethnically diverse countries like the United States-wherein half of immigrants hail from Latin America and another quarter from Asia-this approach is insufficient. There is a persistent diversity gap in genomic research in terms of both current samples and genome-wide association studies, meaning that the field's understanding of genetic architecture and gene-environmental interactions is being hampered. In this commentary, I provide motivating examples of recent research developments related to the following: (1) how the increased ancestral diversity, such as seen among Latin American immigrants, improves power to discover and document genomic loci, (2) informs how environmental factors, such as immigration-related exposures, interact with genotypes to influence phenotypes, and (3) how inclusion can be promoted through community-engaged research programs and policies. I conclude that greater inclusion of immigrants in genomic research can move the field forward toward novel discoveries and interventions to address racial/ethnic health disparities.

Intergenerational educational mobility and type 2 diabetes in the Sacramento Area Latino Study on Aging

PURPOSE

United States (US) Latinos have the lowest educational attainment of any US racial/ethnic group, which may contribute to their disparate burden of Type 2 Diabetes. Herein, we aimed to examine the association between intergenerational educational mobility and Type 2 Diabetes among US Latino adults.

METHODS

We used data from the Niños Lifestyle and Diabetes Study (2013-2014) and the Sacramento Area Latino Study on Aging (1998-1999) to link 616 adult Latino children to their parents. Model-based standardization and robust Poisson regression were used to estimate the prevalence of prediabetes, Type 2 Diabetes, treatment and glycemic control, and describe their associations with intergenerational educational mobility.

RESULTS

Adult children with stable high intergenerational educational attainment had a higher prevalence of prediabetes (Prevalence Ratio, PR=1.58; 95% Confidence Interval, CI=1.08, 2.34) and lower prevalence of Type 2 Diabetes (PR=0.64, CI=0.41, 0.99), as compared to those who experienced low educational attainment across generations. Downward mobility was associated with a higher prevalence of prediabetes (PR=1.54, CI=1.06, 2.23) and worse glycemic control (PR=2.20, CI=1.13, 4.30), and upward mobility was associated with a lower prevalence of Type 2 Diabetes (PR=0.39, CI=0.22, 0.70).

CONCLUSIONS

Our findings from a predominantly Mexican-heritage community suggest that higher education across generations may buffer individuals from glycemic dysregulation. As such, higher education may be a promising public health target to address the rising burden of Type 2 Diabetes in the US.

Associations of Feeding Practices in Early Life and Dietary Intake at School Age with Obesity in 10- to 12-Year-Old Arab Children

Understanding the role in pediatric obesity of early life feeding practices and dietary intake at school age is essential for early prevention. The study aimed to examine associations of early life feeding practices, environmental and health-related exposures, and dietary intake at school age as determinants of obesity in children aged 10–12 years. In an earlier study of 233 healthy infants in two Arab towns in northern Israel, neonatal history, feeding practices, and health information were obtained up to age 18 months. This follow-up study assessed dietary intake and anthropometric measurements at age 10–12 years using the 24 h recall method. Overall, 174 children participated in this study. Almost all (98%) the children were breastfed. The prevalence of obesity at school age was 42%. A multivariable model adjusted for energy intake and socioeconomic status showed positive associations of total fat intake and of weight-for-height z score, but not feeding practices in infancy, with obesity. Higher gestational age at birth was associated with lower odds of obesity at age 10–12 years. In conclusion, in a population with near universal breastfeeding, gestational age at birth, weight indicators but not feeding practices in infancy, and total fat intake at school age were associated with increased likelihood of obesity.