The small-scale study from Drexel University suggests a strong relationship between exposure to adverse childhood experiences (ACEs) and household food insecurity among mothers of young children.
"This is brutal stuff," said Mariana Chilton, from the Drexel University School of Public Health, who was lead author of the study published in the journal Public Health Nutrition.
"The causes and realities of hunger and poverty are complicated and difficult to unravel. We are seeing one component of them is that, for many people, experiences of hunger have trauma and adversity at their core," said Chilton.
The findings, Chilton and colleagues say, show that trauma and chronic stress are a largely overlooked part of the picture of why one in five American households with young children live with food insecurity.
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They say it indicates a greater need for public assistance programmes to provide support for families' emotional needs in addition to their material needs.
Higher scores on the adverse childhood experiences survey, for instance, were significantly associated with the severity of participants' household food insecurity.
In interviews, the study participants relayed their perceptions of how emotional and physical abuse in childhood affected their lives, including physical health, school performance and ability to maintain employment - all factors directly linked to household income and ability to afford enough healthy food for their own children.
Participants described experiences of physical neglect, household drug abuse, exposure to violence at home and in their communities and other adverse experiences in childhood.
"This study has been difficult for us, because examining the relationship between food insecurity and adverse experiences in childhood may simply add more stigma to families already stigmatised and blamed for the hardships that they face," said Molly Knowles, a Drexel MPH graduate, research coordinator at the centre, and a co-author of the study.