稲川 優多

BACKGROUND: Mindfulness interventions are considered an effective strategy for preventing mental health problems among health care workers (HCWs). While prior reviews have often included facilitator-guided or multicomponent interventions, it is unclear whether self-guided digital mindfulness interventions can also be effective without professional or in-person support. OBJECTIVE: This systematic review aimed to investigate the effects of self-guided digital mindfulness interventions on the mental health and well-being of HCWs. METHODS: This work was conducted as part of the DeLiGHT project. We searched electronic databases, including PubMed (MEDLINE), Embase, Cochrane CENTRAL, PsycINFO, PsycARTICLES, and the Japan Medical Abstract Society database, from inception in 2010 to July 25, 2023. To ensure timeliness, we performed an updated search on December 27, 2025. Database searching yielded 37,851 abstracts and 145 studies that examined the effectiveness of digital health interventions for workers in the initial 2023 screen. In the present study, we limited the included studies to those that met the following criteria: randomized controlled trials (RCTs) using self-guided digital mindfulness interventions (eg, smartphone apps or web-based programs) delivered without face-to-face or professional support compared to waiting list controls or usual care among HCWs. The updated search in 2025 yielded 6328 additional records, of which 11 studies were examined. Study quality was assessed using the Cochrane Risk of Bias tool, with meta-analyses conducted using a random-effects model. RESULTS: A total of 9 RCTs with 3088 participants were included in the final analysis. The study populations were diverse, covering North America, Europe, Oceania, and Asia. Interventions were delivered via various digital platforms, including commercial mindfulness apps (n=3), social networking service tools (n=3), and web-based programs (n=3), with an average duration of 6.17 weeks (range: 1.5-18 wk). Five studies assessed outcomes only postintervention, and 4 included short-term follow-up (4-12 wk); no long-term effects were evaluated. The meta-analysis showed a significant beneficial effect on depression (standardized mean difference [SMD]=-0.44, 95% CI -0.88 to -0.00; P=.049), anxiety (SMD=-0.29, 95% CI -0.51 to -0.06; P=.011), perceived stress (SMD=-0.42, 95% CI -0.77 to -0.06; P=.02), and well-being (SMD=0.20, 95% CI 0.09 to 0.30; P<.001) immediately postintervention. The adherence rates reported across studies were highly variable, ranging from 19% to 56%. According to the Cochrane Risk of Bias tool, most studies were rated as having some concerns or a high risk of bias. The certainty of evidence included in the analysis ranged from "Low" to "Very Low." CONCLUSIONS: Overall, low to very low certainty evidence suggests that self-guided digital mindfulness interventions may have short-term beneficial effects on depression, anxiety, perceived stress, and well-being among HCWs. Future high-quality studies are needed to examine the long-term effects and cross-cultural generalizability of these interventions.

Abstract Background Self-induced vomiting (SIV) in patients with eating disorders exposes the oral cavity to repeated chemical and mechanical insults, leading to various oral complications. Necrotizing sialometaplasia (NS) is one such complication; however, most cases resolve spontaneously and follow a benign course without requiring surgical intervention. Case presentation A woman in her twenties with a long history of an eating disorder characterized by habitual SIV developed NS of the hard palate. Unlike the usual benign course, the lesion failed to heal spontaneously and progressed to a palatonasal fistula. Her clinical course was notable for several behavioral and clinical factors that may have contributed to sustained local irritation of the palatal tissues, such as persistent vomiting, smoking, and dental procedures requiring local anesthesia. Multidisciplinary psychiatric and dental management was provided throughout the clinical course. Since spontaneous closure of the fistula could not be expected, surgical repair was ultimately performed. Conclusions Although NS associated with SIV in patients with eating disorders is usually benign and self-limiting, it can rarely progress to severe and irreversible oral complications such as a palatonasal fistula. Despite the fact that NS is not life-threatening, its severe progression can significantly impair quality of life. Accumulating clinical experience with such hidden complications may improve the quality of psychoeducation and advance the treatment of eating disorders.