The effects of bright light exposure at night on circadian rhythms and energy metabolism

Introduction: Exposure to light at night (e.g., night-shift workers or use of artificial lighting) is associated with increased body mass, resulting in increased risk of overweight and obesity. However, the association between light exposure at night and metabolic changes has not been fully understood. This study aimed to investigate the impact of light exposure at night on circadian rhythms and energy metabolism in healthy participants. We hypothesized that light exposure at night alters energy metabolism during sleep through disrupting the circadian system.

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