Clocks and Consciousness: The Consequences of Daylight Saving on Mental Health


Daylight Saving Time (DST) is a practice that involves adjusting clocks forward by one hour during the summer months to extend evening daylight. While the concept was initially introduced to conserve energy and make better use of daylight, its impacts on various aspects of our lives have been a subject of debate.

Can daylight savings affect your sleep, mood, and health?

The time change associated with Daylight Savings can disrupt sleep patterns, leading to sleep deprivation and fatigue. A study published in the journal “Sleep Medicine Reviews” found that the transition to Daylight Savings is associated with a significant increase in sleep disturbances for several days after the time change (Kantermann et al., 2007).

Research published in the “New England Journal of Medicine” suggests that the risk of heart attacks increases in the days following the start of Daylight Savings due to the disruption of the body’s internal clock (Janszky et al., 2008).

Seasonal depression, also known as seasonal affective disorder (SAD), is a type of depression that occurs during specific seasons, typically winter. It is characterized by symptoms such as low mood, lack of energy, and changes in appetite and sleep patterns. DST changes can disrupt circadian rhythms and exacerbate symptoms of seasonal affective disorder. Reduced daylight during winter months has also been associated with mood changes and mental health issues. However, various strategies, such as light therapy and wake therapy, have shown promise in mitigating the impact of DST on seasonal depression. By understanding these connections and implementing appropriate interventions, individuals can better manage their mental well-being during the transition periods of daylight savings time.

Who benefits from daylight savings time?

The original purpose of DST was to save energy by reducing the need for artificial lighting during the longer evenings. However, recent studies have shown mixed results. A report by the U.S. Department of Energy states that the energy savings from DST are relatively small and vary depending on geographical location and climate (U.S. Department of Energy, 2008).

While DST may reduce the need for lighting, it can lead to increased energy consumption for air conditioning during the extended daylight hours, particularly in warmer regions. A study conducted by the University of California found that DST led to a 1% increase in residential electricity consumption (Kotchen and Grant, 2011).

The disruption caused by the time change can result in decreased productivity in the workplace. A study published in the “Journal of Applied Psychology” found that employees experienced a decrease in productivity for several days following the start of DST (Barnes et al., 2016). The time change can also have economic implications. A study by Chmura Economics & Analytics estimated that DST costs the U.S. economy approximately $434 million annually due to factors such as reduced productivity, increased accidents, and healthcare expenses (Chmura Economics & Analytics, 2017).

Should we get rid of daylight savings?

The shift in daylight hours due to DST has been associated with an increase in traffic accidents. A study published in the “Journal of Safety Research” found that the risk of fatal crashes increased by 6% during the week following the start of DST (Coren et al., 1996). b. Pedestrian Safety Concerns: The darker mornings resulting from DST can also pose risks to pedestrians, particularly children waiting for school buses. A study published in the “American Journal of Public Health” found that DST was associated with an increase in pedestrian fatalities during the morning hours (Ferguson et al., 1995).

While Daylight Saving Time was initially implemented with the intention of energy conservation, its impacts on various aspects of our lives are more complex. The time change can disrupt sleep patterns, increase health risks, have inconsistent effects on energy consumption, decrease workplace productivity, and pose road safety concerns. As we continue to evaluate the benefits and drawbacks of DST, it is essential to consider these impacts and explore potential alternatives that may better align with our modern lifestyles.

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  1. Barnes, C. M., Wagner, D. T., & Ghumman, S. (2016). Borrowing Time at Work: The Effect of Time Offsets on Employee Productivity. Journal of Applied Psychology, 101(9), 1247–1260.
  2. Chmura Economics & Analytics. (2017). The Economic and Social Costs of Daylight Saving Time. Retrieved from
  3. Coren, S., & A. L. (1996). Daylight savings time and traffic accidents. Journal of Safety Research, 27(2), 67–73.
  4. Ferguson, R. W., Preusser, D. F., Lund, A. K., & Zador, P. L. (1995). Daylight saving time and motor vehicle crashes: The reduction in pedestrian and vehicle occupant fatalities. American Journal of Public Health, 85(1), 92–95.
  5. Janszky, I., Ljung, R., & Shift, D. (2008). Shifts to and from daylight saving

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