Daylight Saving Time (DST) seriously harms health by disrupting the circadian rhythm, which affects sleep, metabolism, and brain functions.

noli's read

The concept of the circadian rhythm is well-established in chronobiology; our internal clock is indeed synchronized by light. Observational studies, notably published in journals such as the 'Journal of Biological Rhythms', show a correlation between time changes and a temporary increase in sleep disturbances and minor cardiovascular risks during the transition to daylight saving time. It is scientifically recognized that this transition creates a 'social jetlag' that impacts alertness and metabolism in the short term. However, labeling this phenomenon as a 'destruction' of health is a rhetorical exaggeration, as most individuals adapt within a few days. The idea that light is the primary regulator is a proven fact, but the extent of long-term damage to metabolic health remains debated and difficult to isolate from other lifestyle factors. In short, the biological mechanism is real, but the overall impact is often presented in a more alarmist manner than epidemiological data suggests.

the sources

No named source held this one up — that absence is part of the verdict.