The effectiveness of bright light exposure in shift‑worker nurses: a meta‑analysis
Summary
Across five studies in nurses, bright light exposure during night shifts reduced sleepiness and improved alertness and post‑shift sleep duration.
Why It Matters For Night Shift Workers and Night Owls
A meta‑analysis how timing and spectrum of light on shift versus before daytime sleep indicates sleep & alertness for night‑shift workers and night owls. Together with other trials, it frames light as a measurable lever for on‑shift alertness and next‑day sleep, not just ambience. For people who work nights, that frames an everyday choice (when you eat, how you light the end of a shift, how rest is split) as part of the mechanism, not just routine.
Notes
Open access on PMC.