#217 - Modern Night Shift and Circadian Adaptation: Up All Night

The gig economy has vastly expanded night work, from rideshare drivers to fulfillment teams, and our bodies are struggling to adapt. This episode explores the circadian cost of night shifts, including findings that 22 of 30 permanent night nurses still had daytime-oriented melatonin rhythms—a light-exposure problem, not a willpower failure. A 2025 meta-analysis links night shift work to a 13% higher incidence of cardiovascular disease and a 27% higher cardiovascular mortality rate. The discussion also covers meal timing: data suggests fasting at night preserves glucose tolerance better than eating, though no single rule applies universally. Finally, consistent light exposure and schedule discipline emerge as key levers to improve adaptation.