E-cigarettes linked to depression, substance use in pregnancy

This study examined prenatal e-cigarette use among over 180,000 pregnancies in Northern California, finding that 1.1% of pregnant individuals reported using e-cigarettes. While this prevalence may seem low, the research revealed important patterns: e-cigarette use was significantly concentrated among those with behavioral health conditions and other substance use. Individuals with depression were 1.72 times more likely to use e-cigarettes during pregnancy, while those experiencing intimate partner violence showed a 1.39 times higher prevalence. The study employed universal screening protocols to identify use of multiple substances including cannabis, alcohol, prescription opioids, and stimulants alongside traditional tobacco.

The most striking finding was the strong association between polysubstance use and e-cigarette prevalence, with adjusted prevalence ratios ranging from 1.97 to 4.59 across different substances. Among pregnant individuals using other drugs, cannabis use showed a dose-response relationship—higher frequency of use correlated with increased e-cigarette use. This suggests that e-cigarette use is not an isolated behavior but rather part of a broader pattern of substance use among vulnerable populations during pregnancy. The research highlights a critical window for intervention, since behavioral health conditions and substance use during early pregnancy can have profound effects on fetal development.

These findings underscore the need for integrated, prevention-focused care in prenatal settings that addresses multiple behavioral health issues simultaneously rather than in isolation. For cannabis users specifically, the data suggests that pregnant individuals using cannabis alongside other substances face compounded health risks and may benefit from comprehensive screening and intervention programs during their early pregnancy care.