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Why is perpetual daylight saving time bad for health?

Dubai, United Arab Emirates (CNN) — With the end of “daylight saving time”, the United States, Europe, and most of Canada, along with many other countries, are resetting the official clocks and moving the clock back one hour, in line with the time Winter.

In March, the US Senate passed a bill to make daylight saving time permanent.

“The call to end the old practice of changing the clock is gaining traction across the country,” Senator Marco Rubio, a Florida Republican who introduced the bill for the first time in the US Senate, said in a statement.

The Florida legislature voted to make daylight saving time permanent in the state in 2018, but the order cannot take effect until it becomes a federal law.

The bill still had to make its way through the US House of Representatives and be signed by the president into law. In this case, the American population would move their clock hands forward by the clock and leave it that way.

However, a growing number of sleep experts point out that turning the clocks forward in the spring damages our health.

Studies over the past 25 years have shown that a one-hour shift disrupts the body’s tuned rhythms to the Earth’s rotation, fueling the debate over whether providing DST in any way is a good idea.

“I’m one of the many sleep experts who know it’s a bad idea,” said Dr. Elizabeth Klerman, professor of neurology in the Department of Sleep Medicine at Harvard Medical School.

Dr. Phyllis Zee, director of the Center for Circadian and Sleep Medicine at Northwestern University School of Medicine in Evanston, Illinois, also opposes DST.

“Between March and November your body gets less light in the morning and more light in the evening, which can disrupt your circadian rhythm,” Zee said.

Zee noted that standard time, which we enter when we turn our clocks back in the fall, is much closer to the day-night cycle of the sun.

This cycle has defined our circadian rhythm, or circadian clock, for centuries.

Zee added that our internal clock controls not only when we sleep, but also when we eat, exercise or work, as well as “blood pressure, heart rate, and cortisol rhythm.”

A call to ban DST came from the American Academy of Sleep Medicine, saying: “Current evidence better supports the adoption of year-round standard time, which better aligns with the human circadian clock and provides distinct public health and safety benefits.”

What harm?

And when our internal clocks change in the solar day-night cycle by even one hour, we develop what sleep experts call “social travel fatigue.”

Studies have shown that social travel fatigue increases the risk of metabolic disorders such as diabetes, increases the risk of heart disease and stroke, worsens mood disorders such as depression, affects the digestive and endocrine systems and shortens the duration of our sleep.

It can even reduce life expectancy.

A 2003 study found that getting one hour less sleep for two weeks had the same effect on thinking and motor skills as not getting two full nights of sleep.

Another study showed that reducing sleep for 90 minutes, between the recommended 7 and 8 hours for adults, altered the DNA of immune cells and increased inflammation, a major cause of chronic disease.

According to a statement from the Biological Rhythms Research Society, making the time change permanent would make the chronic effects of sleep loss more severe, not only “because we have to go to work 1 hour earlier for an additional 5 months each year, but also because the clock is ticking.” Biology is usually later in winter than in summer with reference to the hour of the sun.

The authors concluded that “combining daylight saving time and winter time will make the differences between our body clocks and social clocks worse and negatively affect our health even more.”

There are reasons for the US Senate to unanimously pass a bill to make daylight saving time permanent, and proponents say that extra daylight in the evening reduces car accidents and crime, and increases opportunities for trade and entertainment, as people prefer shopping and exercising during daylight hours.

However, research has shown an increase in both heart attacks and fatal car accidents after the clock was set forward in the spring. Children also end up going to school in the dark, with dire consequences.

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