Cognitive impairment is common among cancer survivors and harms quality of life. A systematic review and meta-analysis of 23 randomized and 7 non-randomized controlled trials found that mindfulness interventions significantly improved patients' subjective cognitive function immediately after the intervention (between-group standardized mean difference 0.81, 95% CI 0.58 to 1.03; within-group 1.12, 95% CI 0.71 to 1.52) and at follow-up (between-group 0.39, 95% CI 0.09 to 0.68; within-group 0.59, 95% CI 0.35 to 0.82). Larger effects appeared in developing versus developed countries and for interventions without additional home practice in within-group comparisons. No significant effects were found on objective cognitive function.
A digital mindfulness-based intervention for prenatal insomnia reduced insomnia symptoms in pregnant women with subthreshold to clinical insomnia. In a randomized trial with 160 women, those receiving the six-week digital program plus standard care showed greater improvement in insomnia symptoms immediately after the intervention and in the third trimester compared to standard care alone, with a moderate effect size. Benefits were not sustained at 42 days postpartum. The intervention also increased the likelihood of insomnia remission by the third trimester. Changes in sleep-specific worry and presleep arousal mediated the effect. Most secondary outcomes, including sleep quality and mood, did not differ significantly between groups.