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BackgroundThe 2019 coronavirus disease (COVID-19) epidemic poses a challenge to individuals' mental health. Increased stress, negative affect (NA), and posttraumatic stress symptoms (PTSS) that are being experienced globally may lead to eating problems. The purpose of this study was to explore the impacts of the perceived severity of COVID-19 on eating problems as well as the mediating effects of stress/NA/PTSS both at the within-person level and between-person level. MethodsDuring the COVID-19 outbreak, a total of 108 college students were recruited to report their perceived severity of COVID-19, stress, NA, PTSS, and eating problems 3 times a day for 7 consecutive days using Ecological Momentary Assessment (EMA). Results: State perceived severity of COVID-19 predicted fewer subsequent eating problems in daily life at the within-person level. Both state NA and PTSS were positively associated with eating problems in daily life. At the between-person level, trait-like perceived severity of COVID-19, stress, NA, and PTSS were positively associated with overall eating problems. There were no mediating effects of stress/ NA /PTSS on the relations between perceived severity of COVID-19 and eating problems at the within-person/between-person level. ConclusionsThe perceived severity of COVID-19, stress, NA, and PTSS might increase the risk of eating problems.

Background The COVID-19 pandemic poses a challenge to individuals' mental health. People worldwide are experiencing increased stress, negative affect, and posttraumatic stress symptoms, which may lead to eating problems. The purpose of this study was to explore the impact of the perceived severity of COVID-19 on eating problems and the mediating effects of stress/negative affect/posttraumatic stress symptoms both at the personal level and interpersonal level. Methods: During the COVID-19 outbreak, a total of 108 college students were recruited to report their perceived severity of COVID-19, stress, negative affect, posttraumatic stress symptoms, and eating problems three times a day for seven consecutive days using Ecological Momentary Assessment. Results: State perceived severity of COVID-19 predicted fewer subsequent eating problems in daily life at the personal level. Both state negative affect and posttraumatic stress symptoms were positively associated with eating problems in daily life. At the interpersonal level, trait-like perceived severity of COVID-19, stress, negative affect, and posttraumatic stress symptoms were positively associated with overall eating problems. There were no mediating effects of stress/negative affect/posttraumatic stress symptoms on the relations between perceived severity of COVID-19 and eating problems at the personal/interpersonal level. Conclusions: The perceived severity of COVID-19, stress, negative affect, and posttraumatic stress symptoms might increase the risk of eating problems.

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