# Daylight Saving Time Has No Science and Causes Real Harm

> Daylight saving time came from trivial motives, not science. The clock shift causes a 6% spike in fatal crashes and up to 24% more heart attacks.

Published: 2026-03-29
URL: https://daniliants.com/insights/springing-forward-straight-into-clock-chaos-there-are-loads-of-studi/
Tags: daylight-saving-time, circadian-rhythm, sleep-disruption, heart-attacks, traffic-accidents, public-health, time-change

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## Summary

Daylight saving time was never adopted for scientifically sound reasons - it originated from personal hobbies (bug collecting, golf) and wartime coal-saving assumptions that have since been disproven. The biannual clock shift causes measurable harm: a 6% spike in fatal car crashes, up to 24% increase in heart attacks, and significant workplace injury increases due to circadian rhythm disruption.

## Key Insight

- The common claim that DST helps farmers is false - agricultural workers have historically opposed it because livestock operate on biological clocks, not wall clocks
- Benjamin Franklin's 1784 "proposal" was satire (taxing shutters, rationing candle wax, firing cannons) - he never suggested changing clocks
- The actual originators had trivial motivations: George Hudson (1895, New Zealand) wanted more evening light for insect collecting; William Willett (1907, UK) wanted longer golf games
- Germany first implemented DST in WWI to save coal; other countries copied it as a wartime measure and it stuck
- Modern evidence shows DST does NOT save energy
- Concrete health impacts the day after spring-forward:
  - 6% increase in fatal car accidents
  - Up to 24% jump in heart attacks
  - Significant spike in workplace injuries
- These effects stem from disrupted circadian rhythms - essentially a mild, society-wide jet lag imposed twice yearly on a third of the world's countries