Household food insecurity and in-utero and early life smoke exposure: Data from NHANES 2003-2016

Abstract

In-utero, postnatal, and childhood smoke exposure are associated with adverse health consequences, and examining factors related to smoke exposure during these vulnerable periods are critical to inform efforts that promote maternal and child health. This study included pregnant and postpartum women aged 20-44 years and children aged 3-12 years from National Health and Nutrition and Examination Survey (NHANES) 2003-2016 cycles. Logistic regression examined association of household food insecurity with firsthand (FHS) and secondhand (SHS) exposure among pregnant and postpartum women, and SHS exposure among children, based on serum cotinine and respondent-reports. Very low household food security was significantly associated with increased odds of cotinine-based FHS exposure among pregnant (OR(95%CI) = 5.19 (1.75, 15.39)) and postpartum women (OR(95%CI) = 4.75(1.66, 13.57)). Non-smoking, postpartum women from very low food secure households also had significantly greater odds of cotinine-based SHS exposure (OR(95%CI) = 7.40 (2.08, 26.37)) than those from food secure households. Using respondent-reported smoking status, low food security in pregnant and postpartum women was significantly related to increased odds of FHS exposure (OR(95% CI) = 3.75(1.52, 9.23)). Further, children from marginal, low and very low food secure households had significantly higher odds of SHS exposure compared to those from food secure households. Results imply the co-occurrence food insecurity and in-utero and early life smoke exposure.

Keywords: Cotinine; Early life; Household food insecurity; NHANES; Prenatal smoke exposure.