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This study examined the bidirectional relationships between sleep quality, loss of control (LOC) eating, and night eating in Chinese adolescents using longitudinal data over an 18‐month study period.

Four‐waves of data measurement (Waves 1–4), at 6‐month intervals, were conducted with 2566 adolescents aged 11–17 years at baseline. A set of questionnaires were used to assess night eating, LOC eating, and sleep quality at each wave of data collection. Cross‐lagged models were applied to analyze the bidirectional relationships between night eating, LOC eating, and sleep quality.

Results indicated that higher night eating scores consistently predicted poorer sleep quality and higher LOC eating scores at Waves 1, 2, and 3. Furthermore, poorer sleep quality predicted higher night eating scores at Wave 1 and Wave 3, and higher LOC eating scores predicted higher night eating …