On November 3, 2024, the United States will end Daylight Saving Time, turning clocks back one hour to start Standard Time. This adjustment, made twice a year, aims to make better use of daylight and save energy. However, health experts warn of the potential negative effects this change can have on people’s well-being.

Frequency and Purpose of the Time Change

In the United States, the time change occurs twice a year:

Daylight Saving Time (DST): Starts on the second Sunday of March when clocks move forward one hour. This period seeks to maximize the use of daylight during the warmer months.

Standard Time: Begins on the first Sunday in November, when clocks are turned back one hour, as will happen on November 3, 2024. This adjustment is intended to align human activities with natural daylight hours during fall and winter.

Health Effects

The American Academy of Sleep Medicine points out that these changes can disrupt sleep patterns, heart rate, and metabolism. The disruption of the circadian rhythm, the “biological clock” that regulates body functions, can lead to:

Sleep Disorders: Difficulty falling asleep or waking up, leading to fatigue and daytime sleepiness.

Cardiovascular Issues: Some studies suggest an increase in the incidence of heart attacks and strokes following the time change.

Metabolic Changes: Disruptions in metabolism that could contribute to weight gain and increased risk of type 2 diabetes.

There is also a noted rise in traffic and workplace accidents in the days following the time change, attributed to reduced alertness and drowsiness.

Recommendations to Mitigate the Effects

To minimize the health impact of the time change, experts recommend:

Gradual Adjustment: Modify bedtimes and wake times in 15-minute increments during the week leading up to the change.

Exposure to Natural Light: Take advantage of daylight to help regulate the circadian rhythm.

Sleep Hygiene: Maintain a conducive sleep environment and avoid using electronic devices before bed.

Physical Activity: Engage in regular exercise, preferably in the morning hours.

While the time change aims to optimize natural light usage and save energy, it is essential to consider its potential health repercussions and take steps to mitigate them. Maintaining healthy habits and paying attention to the body’s signals can help ease the transition during these temporary adjustments.