Shift work and health outcomes: an umbrella review of systematic reviews and meta‑analyses

Why It Matters For Night Shift Workers and Night Owls

Across prior reviews whether keeping most calories in a daytime window, with minimal overnight intake, maps findings showing sleep, alertness, recovery, and metabolic markers for night‑shift workers and night owls. The signal puts timing—rather than only calories or macros—at the center of how bodies respond to working at night. 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.