Trauma exposure and posttraumatic stress symptoms: Associations with self-reported dietary and exercise changes

Exposure to trauma and subsequent posttraumatic stress symptoms (PTSS) increase the risk of poor physical health outcomes. Yet, the nuances of the paths from trauma to poor health are largely theoretical, and research regarding how trauma types relate to specific trauma-related changes to diet and exercise is needed. The present study examined the associations between noninterpersonal and interpersonal trauma and PTSS with several novel dietary and exercise changes (i.e., perceived trauma-related diet changes in intake of calories, comfort food, refined carbohydrates, and sugar as well as changes in exercise amount and intensity).

Participants were 430 Midwestern University trauma-exposed students (Mage = 23.87, SD = 6.90, range = 18-63; 81.1% female; 56.9% White).

Higher PTSS corresponded to increased perceived trauma-related changes in consumption of calories, comfort foods, carbohydrates, and sugar (Bs = 0.1-.02). Interpersonal trauma was not tied to dietary changes, and noninterpersonal traumas were linked to decreased sugar intake. For trauma-related exercise changes, higher PTSS was associated with both increased likelihood of lower intensity exercise (B = .02) and higher intensity exercise (B = .03), yet neither trauma types were related. Further, neither trauma exposure nor PTSS was associated with perceptions in trauma-related increases in exercise amount.

PTSS, as opposed to types of trauma exposure, may be the primary driver of perceived trauma-related diet and exercise changes. The identification of trauma-related health modifications may help improve health outcomes of trauma survivors, and ongoing work should examine whether trauma-focused treatment reduces maladaptive changes to diet and exercise. (PsycInfo Database Record (c) 2026 APA, all rights reserved).