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Doctors call for end to daylight saving time transitions Doctors writing in a leading medical journal have put forth a case for doing away with daylight saving time (DST) transitions. They argue that these annual transitions to and from DST misalign biological clocks, with long term consequences for health.
Transitioning to and from DST may adversely effect circadian rhythms. In the United States, DST begins on the second Sunday of March, when most parts of the country "spring forward" and advance their clocks by 1 hour.
DST then lasts for 8 months, until the first Sunday of November. At this point, clocks "fall back" to standard time.
"It's not 1 hour twice a year," says Beth A. Malow, a professor of neurology at Vanderbilt University Medical Center in Nashville, TN. She adds, "It's a misalignment of our biologic clocks for 8 months of the year."
She explains that DST transitions can affect a number of brain functions, including alertness and energy levels.
"When we talk about DST [transitions] and the relationship to light," Prof. Malow continues, "we are talking about profound impacts on the biological clock, which is a structure rooted in the brain."
In a recent JAMA Neurology paper, she and her colleagues reviewed evidence on how DST transitions impact processes that involve the brain, heart, sleep patterns, and genes that control the sleep-wake cycle.
powered by Rubicon Project The paper's authors point out that they are concerned with the effects of annual transitions to and from DST, and not what might result from a permanent adoption of DST.
"The effects of permanent DST have received less attention and are beyond the scope of this review," they note.
The US adopted DST to save energy Many people believe that the government introduced DST to give farmers an extra hour of evening sunlight during the summer months.
However, according to the U.S. Department of Energy (DOE), the purpose of DST is to help reduce the use of electricity in buildings.
In 1966, Congress passed the Uniform Time Act, which established set dates for the start and end of DST. This decision came as a result of the confusion that ensued after World War II, during which the U.S. adopted DST for the second time and kept to it.
For reasons of saving energy, further legislation that took effect in 2007 added 4 weeks to DST, bringing it to its current 8 month duration.
The Department of Transport (DOT) is the body in the U.S. that is responsible for making sure that people follow DST, and for evaluating its impact.
In 1974, the DOT reported to Congress that the potential benefits to energy conservation, violent crime reduction, and traffic safety from DST were "minimal."
A 2008 DOE study that evaluated the impact of extended DST on national energy consumption found that it reduced it by 0.02%.
How do you define health? The word "health" refers to a state of complete emotional and physical well-being. ... Health can be defined as physical, mental, and social wellbeing, and as a resource for living a full life. It refers not only to the absence of disease, but the ability to recover and bounce back from illness and other problems.
What is the simple meaning of health? From Wikipedia, the free encyclopedia. Health is "a state of complete physical, mental, and social well-being and not merely the absence of disease" according to the World Health Organization (WHO). Physical is about the body. Mental is about how people think and feel.
Doctors call for end to daylight saving time transitions
ReplyDeleteDoctors writing in a leading medical journal have put forth a case for doing away with daylight saving time (DST) transitions. They argue that these annual transitions to and from DST misalign biological clocks, with long term consequences for health.
Transitioning to and from DST may adversely effect circadian rhythms.
In the United States, DST begins on the second Sunday of March, when most parts of the country "spring forward" and advance their clocks by 1 hour.
DST then lasts for 8 months, until the first Sunday of November. At this point, clocks "fall back" to standard time.
"It's not 1 hour twice a year," says Beth A. Malow, a professor of neurology at Vanderbilt University Medical Center in Nashville, TN. She adds, "It's a misalignment of our biologic clocks for 8 months of the year."
She explains that DST transitions can affect a number of brain functions, including alertness and energy levels.
"When we talk about DST [transitions] and the relationship to light," Prof. Malow continues, "we are talking about profound impacts on the biological clock, which is a structure rooted in the brain."
In a recent JAMA Neurology paper, she and her colleagues reviewed evidence on how DST transitions impact processes that involve the brain, heart, sleep patterns, and genes that control the sleep-wake cycle.
powered by Rubicon Project
The paper's authors point out that they are concerned with the effects of annual transitions to and from DST, and not what might result from a permanent adoption of DST.
"The effects of permanent DST have received less attention and are beyond the scope of this review," they note.
The US adopted DST to save energy
Many people believe that the government introduced DST to give farmers an extra hour of evening sunlight during the summer months.
However, according to the U.S. Department of Energy (DOE), the purpose of DST is to help reduce the use of electricity in buildings.
In 1966, Congress passed the Uniform Time Act, which established set dates for the start and end of DST. This decision came as a result of the confusion that ensued after World War II, during which the U.S. adopted DST for the second time and kept to it.
For reasons of saving energy, further legislation that took effect in 2007 added 4 weeks to DST, bringing it to its current 8 month duration.
The Department of Transport (DOT) is the body in the U.S. that is responsible for making sure that people follow DST, and for evaluating its impact.
In 1974, the DOT reported to Congress that the potential benefits to energy conservation, violent crime reduction, and traffic safety from DST were "minimal."
A 2008 DOE study that evaluated the impact of extended DST on national energy consumption found that it reduced it by 0.02%.
How do you define health?
ReplyDeleteThe word "health" refers to a state of complete emotional and physical well-being. ... Health can be defined as physical, mental, and social wellbeing, and as a resource for living a full life. It refers not only to the absence of disease, but the ability to recover and bounce back from illness and other problems.
What is the simple meaning of health?
ReplyDeleteFrom Wikipedia, the free encyclopedia. Health is "a state of complete physical, mental, and social well-being and not merely the absence of disease" according to the World Health Organization (WHO). Physical is about the body. Mental is about how people think and feel.