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Tuesday, October 12, 2010

Lights at night linked to weight gain may be right in Food Times

Researchers from Israel and the United States believe they have found evidence of a link between obesity and metabolic disorders and exposure to a local area network (light at night) in animal studies. In an article published in the Proceedings of the National Academy of Sciences, they found that mice exposed to darkness during sleep for a period of eight weeks a weight gain of 50% compared with mice that had been sleeping in the dark. Even by reducing their food intake and do more exercise they do not bring their weight than other mice that slept in the dark unless they have ensured the availability of natural food product carries mouse meals.

Researchers, departments of neuroscience and psychology, Ohio State University, Columbus, Ohio, and the Israeli Center for Interdisciplinary Research in chronobiology at the University of Haifa, explained the general information that the steady increase in the percentage of disorders metabolic obesity and people coincided with an increase in the LAN and work shirt.

The 24-hour rhythm that the state of our inner energy and regulates metabolism is controlled by an internal biological clock that works in conjunction with the information and responds to light, the authors write. Our internal clock (circadian clock) is preparing for foreseeable events such as the availability of food and sleep. When the function of this clock is disturbed, our bodies experience a failure in our metabolism and body rhythms (circadian).

In other words - the predictability of light day and regulates our internal clock that regulates our metabolism. When the light / dark cycle is disrupted, so is our body's metabolism, and even if we decide to eat.

The researchers assessed the effects of networks on the BMI (body mass index) in male mice to see if there might be a causal relationship between exposure to light during the night and obesity.

They found that mice exposed to light at night, a significantly higher BMI and a lower glucose tolerance compared to mice kept in a normal cycle of day / night (dark night) of it. The difference in BMI remained even after their total caloric intake and daily physical activity have changed.

They also found that the meals are different. Mice are nocturnal eaters in nature - they consume more calories than in the dark during the day. The researchers found that mice kept in a LAN environment (low light at night) has consumed more than half of their food during the day, compared with mice in the natural chiaroscuro that consumed a little over one third of their calories during the day.

Co-author Randy Nelson said:

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