Binge Eating Disorder (BED) has high lifetime prevalence rates, low treatment success rates, and high rates of treatment dissatisfaction, early discontinuation of care, and recurrence. Complementary and integrative health (CIH) interventions (non-mainstream practices used with conventional approaches for whole-person treatment) hold potential to overcome many treatment barriers and improve BED treatment outcomes. Some CIH interventions have empirical support for use in eating disorders. However, little is known about the current state of CIH use in BED. This mixed-methods cross-sectional study collected information from BED experts about CIH use in adult BED treatment. Fourteen expert BED researchers and clinicians were identified based on federal funding, PubMed-indexed publications, practice in the field, leadership in professional societies, and/or popular press distinction. Anonymously recorded semi-structured interviews were analyzed by ≥2 investigators using reflexive thematic analysis and quantification. Expert opinions and experiences on/with CIH use were generally positive/supportive (64%) with mixed views (36%) varying by intervention and empirical support. The interventions most commonly described were mindfulness (71%), yoga (64%), and supplements/vitamins/pre-/probiotics/herbs (64%). Supplements/vitamins/pre-/probiotics/herbs had mixed views; all other interventions were generally viewed positively. The benefits most commonly associated with specific interventions (e.g., mindfulness, yoga, supplements) were: regulating/tolerating emotions/mood/stress/anxiety (50%); healing the relationship with the body/body image/movement/exercise-trauma (29%); biological/physiological benefits (29%); and directly supporting treatment ("space for self-separate from treatment," behavior change, "tolerating treatment") (29%). Intrinsic self-healing (e.g., patient-driven healing that comes from the patient's innate desire to heal based on the patient's lived experience(s)) and investigative research were also associated with CIH use broadly. Most experts (57%) expressed familiarity with existing literature/research for ≥1 CIH intervention; 50% identified a need for empirical testing. Half (50%) spontaneously described using ≥1 CIH intervention in their own clinical practice/center. The most used interventions were yoga (43%), meditation/mindfulness (29%), and acupuncture (21%). Eight experts (57%) endorsed the importance of correct implementation; 43% acknowledged CIH use in conventional treatments (2nd-wave CBT, 3rd-wave behavior therapies). CIH interventions can complement current BED treatments to improve clinical outcomes, particularly managing anxiety/stress/mood, healing the relationship with the body, addressing biological/physiological deficiencies, and tolerating treatment (thus reducing treatment dropout). Empirical testing is warranted with a particular need for randomized controlled trials and guidelines on implementation and use.
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