Neighborhood-level poverty and food insecurity during pregnancy associated with lower birthweight and small for gestational age infants

March 27, 2024
NIH study finds.

Living in neighborhoods where residents have lower incomes and limited food access during pregnancy was associated with an increased risk of babies born small for gestational age or with lower birthweight, according to a new study from the NIH Environmental Influences on Child Health Outcomes (ECHO) Program.

Previous studies have shown that maternal diet during pregnancy can impact the physical and mental health of a mother. However, less is known about how food insecurity affects health outcomes for newborns. In a new research article, ECHO researchers analyzed data to understand what connections might exist between where a pregnant person lives, their access to food, and birth outcomes.

This ECHO analysis, recently published in the American Journal of Clinical Nutrition, indicates a possible connection.

Using nationwide data from more than 22,000 ECHO Cohort participants, a team of ECHO researchers found that, during pregnancy, 24% of those participants lived in a low-income neighborhood where a third or more residents lived over one mile from a grocery store (or more than 10 miles in rural areas). They also found that about 14% of the participants lived in neighborhoods with high poverty rates and where more than 100 households had no access to a vehicle and lived more than half a mile from the nearest grocery store.

Residence in low-income, low-food-access and low-income, low-vehicle-access neighborhoods was associated with lower birth weight, higher odds of babies born small for gestational age, and lower odds of babies born large for gestational age. However, researchers did not find any associations of individual food insecurity with birth outcomes. 

To conduct this study, researchers matched pregnant individuals' home addresses with information about nearby food availability from the U.S. Food Access Research Atlas, which provided data on household income, the availability of a household vehicle, and where people can access food in different neighborhoods.

Environmental Influences on Child Health Outcomes NIH release on Newswise