Saturday, April 5, 2014

Morning light could be secret to healthy weight

Source Website: http://news.insing.com/feature/morning-light-could-be-secret-to-healthy-weight/id-073f3101
By AFP, inSing.com - 4 April 2014 5:37 PM | Updated 5:39 PM


People doing their morning exercise at the Botanical Garden in Singapore on 2 April 2013
PHOTO: People doing their morning exercise at the Botanical Garden in Singapore on 2 April 2013 (Photo: AFP / Roslan Rahman)
By AFP, inSing.com - 4 April 2014 5:37 PM | Updated 5:39 PM
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http://news.insing.com/feature/morning-light-could-be-secret-to-healthy-weight/id-073f3101



Being slimmer could be as simple as waking up early for some morning sunshine, US researchers suggested on Wednesday.

A small study of 54 volunteers showed that the leanest ones did not necessarily eat better or exercise more than the rest. They simply were exposed to more bright daylight earlier in the day.

The findings by Northwestern University researchers are published in the journal PLOS ONE.

"The earlier this light exposure occurred during the day, the lower individuals' body mass index," said co-lead author Kathryn Reid, research associate professor of neurology at Northwestern University Feinberg School of Medicine.



The earlier this light exposure occurred during the day, the lower individuals' body mass index.
PHOTO: The earlier this light exposure occurred during the day, the lower individuals' body mass index.
From research associate professor of neurology at Northwestern University Feinberg School of Medicine.
Picture posted by gestiefeltekatze (Morning Visions), Photography / People & Portraits / Expressive, ©2013-2014 gestiefeltekatze
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"The later the hour of moderately bright light exposure, the higher a person's BMI."

Participants' average age was 30. They wore wrist monitors to measure their light exposure and sleep cycles, and kept food logs for the duration of the seven-day study.

Morning light was found to have an influence on body mass, regardless of a person's physical activity level, caloric intake, sleep timing, age or the season.



Morning light was found to have an influence on body mass, regardless of a person's physical activity level, caloric intake, sleep timing, age or the season.
PHOTO: Morning light was found to have an influence on body mass, regardless of a person's physical activity level, caloric intake, sleep timing, age or the season.
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The study found morning light accounted for about 20 percent of a person's body mass index (BMI).

"Light is the most potent agent to synchronize your internal body clock that regulates circadian rhythms, which in turn also regulate energy balance," said study senior author Phyllis Zee.

"The message is that you should get more bright light between 8 am and noon," she added.

As little as 20 to 30 minutes could be enough to affect BMI, the study said.
By AFP, inSing.com - 4 April 2014 5:37 PM | Updated 5:39 PM



he study found morning light accounted for about 20 percent of a person's body mass index (BMI).
PHOTO: The study found morning light accounted for about 20 percent of a person's body mass index (BMI).
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The message is that you should get more bright light between 8 am and noon. As little as 20 to 30 minutes could be enough to affect BMI, the study said.
PHOTO: The message is that you should get more bright light between 8 am and noon. As little as 20 to 30 minutes could be enough to affect BMI, the study said. 
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