One of the most under-recognized risks in modern American health isn’t diet or exercise. It’s night shift work. Large population studies show that people in the U.S. who consistently work overnight or rotating schedules face higher rates of chronic disease and shorter life expectancy compared to daytime workers. The impact isn’t subtle - long-term circadian disruption has been linked to increased risks of cancer, cardiovascular disease, metabolic disorders, and impaired immune function. Neurosci