Weight self-stigma, in which individuals internalize stigmatizing messages about weight, is a prevalent problem that contributes to poor quality of life and health. This pilot randomized controlled trial evaluated acceptance and commitment therapy (ACT) guided self-help using The Diet Trap for 55 overweight/obese adults high in weight self-stigma. Participants were randomized to the ACT self-help book plus phone coaching (GSH-P; n = 17), self-help book plus email prompts only (GSH-E; n = 20), or a waitlist condition (n = 18), with online self-report assessments at baseline and posttreatment (8 weeks later). Participants reported high satisfaction ratings and engagement with the ACT self-help book, with no differences between GSH-P and GSH-E. Both GSH-P and GSH-E improved weight self-stigma relative to waitlist with large effect sizes. There were mixed findings for health outcomes. The GSH-P condition improved more on healthy eating behaviors and general physical activity, but neither ACT condition improved more than waitlist on self-reported body mass index, emotional eating, and a second measure of physical activity. Results suggest an ACT self-help book with email prompts can reduce weight self-stigma and potentially improve some health behavior outcomes. Phone coaching may provide additional benefits for generalizing ACT to diet and physical activity.

体重自我污名是个人将关于体重的污名化信息内化的普遍问题，导致生活质量和健康质量下降。这项试点随机对照试验评估了接受和承诺疗法 (ACT) 引导的自助使用饮食陷阱对 55 名体重自尊的超重/肥胖成年人进行了指导。参与者被随机分配到 ACT 自助书加电话辅导（GSH-P；n  = 17）、自助书加电子邮件提示（GSH-E；n  = 20）或候补名单条件（n = 18），在基线和治疗后（8 周后）进行在线自我报告评估。参与者报告了对 ACT 自助书的高满意度和参与度，GSH-P 和 GSH-E 之间没有差异。相对于具有大效应量的候补名单，GSH-P 和 GSH-E 都改善了体重自我污名。健康结果的结果好坏参半。GSH-P 状况在健康饮食行为和一般身体活动方面的改善更多，但在自我报告的体重指数、情绪化饮食和第二项身体活动测量方面，两种 ACT 状况的改善都没有超过候补名单。结果表明，带有电子邮件提示的 ACT 自助书可以减少体重自我污名，并可能改善一些健康行为结果。电话辅导可能会为将 ACT 推广到饮食和身体活动提供额外的好处。