A comprehensive review of 60 global studies indicates that daylight saving time (DST) may pose significant mental health risks, particularly for individuals with chronic conditions. The seasonal practice of advancing clocks by one hour, observed in over 70 countries, acts as a widespread circadian stressor, disrupting the body's natural internal clock. Scientists from New Mexico State University (NMSU) and the University of Nevada, Las Vegas, found that DST transitions, especially the "spring forward" shift, are associated with increased sleep disturbances, impaired cognitive function, heightened emotional reactivity, and a greater risk of depressive and manic episodes. The findings emerge amid growing calls to abolish DST in the US, with experts suggesting permanent standard time could better serve public mental health by aligning more closely with natural light cycles.