Food Insecurity and Mental Distress among WIC-Eligible Women in the United States: A Cross-Sectional Study

Women living in Special Supplemental Nutrition Program for Women, Infants, and Children (WIC)-eligible households may be pregnant or breastfeeding. Stress during pregnancy and breastfeeding may influence women’s mental health making them more vulnerable to higher rates of food insecurity (FI). Determine whether or not FI is associated with moderate-to-severe mental distress among women living in WIC-eligible households, and whether or not the strength of the association differs among WIC participants compared with eligible nonparticipants with low income. Cross-sectional data from the 2011-2018 National Health Interview Survey were utilized. A total of 7,700 women living in WIC-eligible households with at least one child were analyzed. Moderate-to-severe mental distress was measured using the validated K6 nonspecific psychological distress scale. FI was measured using the 10-item, US Adult Food Security Survey Module. Multivariate logistic regression was used to examine the association between FI and mental distress. The conditional effects of WIC participation were examined by including interaction terms for FI and WIC participation as well as by stratifying the sample by WIC participation. Among women in WIC-eligible households, FI was associated with moderate-to-severe mental distress in a dose-response fashion: compared with those who were food secure, the adjusted odds of moderate-to-severe mental distress were 1.8 times higher among those with marginal food security (adjusted odds ratio [AOR] 1.83, 95% CI 1.50 to 2.23), 2.1 times higher among those with low food security (AOR 2.14, 95% CI 1.76 to 2.60), and 3.7 times higher among those with very low food security (AOR 3.73, 95% CI 2.95 to 4.71). The interaction between FI and WIC participation was not significant, with similar associations between FI and mental distress among WIC participants and nonparticipants. Among this nationally representative sample of women in WIC-eligible households, increasing severity of food insecurity was associated with poor mental health among WIC participants and nonparticipants. WIC participation was not observed to moderate the association between FI and mental distress. More research should consider including mental health screening at WIC clinic visits to enable early identification and referral for care.