This page reviews a 2026 randomized placebo-controlled trial of CBD for sleep disturbances in adults with elevated trait worry. It explains what was measured, what was found, what was not proved, and why readers should be careful not to overstate a modest dose-comparison signal as definitive efficacy. Relevant entities and search concepts include cannabidiol, CBD isolate, sleep quality, sleep disturbance, placebo response, randomized controlled trial, sleep support, cannabis medicine, evidence review, dosing, and anxiety-related sleep complaints.