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Every year, as winter approaches, many countries turn their clocks back one hour to mark the end of daylight saving time – a practice originally started to make better use of daylight and conserve energy. While this change may seem small and even welcome like adding an extra hour of rest, experts say it can have surprising effects on the body. Even an hour’s disruption can disrupt circadian rhythms, making it harder for many people to adjust physically and mentally.
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Dr. Jeremy London, a cardiothoracic surgeon with over 25 years of clinical experience, highlights the surprising effects that Daylight Saving Time has on the human body. In an Instagram video posted on November 10, the cardiac surgeon explains how even a one-hour shift can disrupt the body’s natural rhythms and offers practical tips to help the body adjust smoothly.
How does daylight savings affect your body?
Dr. London explains that with the arrival of winter, our clocks go back one hour each year – a change caused by daylight savings time. However, while the extra hour may seem like a bonus to your daily routine, it won’t necessarily have any beneficial effects on your body.
He explains, “That 1-hour change can completely disrupt your circadian rhythm. The result is a measurable increase in heart attacks, strokes, mood disturbances, car accidents, and even mortality in the days following infection.”
Why does this happen?
According to cardiac surgeons, our body’s internal clock is closely linked to natural light exposure. When this rhythm is disrupted, it can derail the overall balance and normal functioning of the body.
Dr. London explains, “Studies show that our internal biological clock is tightly coordinated with light exposure. When we change it suddenly, sleep quality drops, cortisol increases, and inflammation increases, especially in the spring. Now, some people are more affected than others, but none of us are immune.”
How to Adjust Daylight Savings?
Dr. London says the American Academy of Sleep Medicine recommends maintaining a consistent standard time, as this more closely aligns with our natural biology and helps reduce potential health risks. But until that happens, cardiologists suggest ways to adjust accordingly.
He elaborates, “Prioritize consistent sleep, morning sunlight and mindfulness breaks. I find that meditation, outdoor walks and even sauna sessions help me reset after the time change because sleep is king. If you’re missing sleep, it affects every aspect of your life.”
Note to readers: This article is for informational purposes only and is not a substitute for professional medical advice. It is based on user-generated content from social media. HT.com has not independently verified the claims and does not endorse them.
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