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Wednesday, 4 June 2014

Blue light emitted by devices 'increases hunger' - How using a smartphone or tablet could make you FAT -

Blue light emitted by devices 'increases hunger' - How using a smartphone or tablet could make you FAT - 

Using a computer or smartphone at night can cause us to pile on the pounds, new research has revealed.
The study found a link between blue light exposure - blue light is emitted by smartphones and tablets - and increased hunger
It found that exposure to the light increases hunger levels for several hours and even increases hunger levels after eating a meal.

Results of the US study show that blue-enriched light exposure, compared with dim light exposure, was associated with an increase in hunger that began 15 minutes after light onset and was still present almost two hours after the meal.
Blue light exposure has also already been shown to decreased sleepiness in the evening increasing the risk of insomnia.
Study co-author Ivy Cheung, of Northwestern University, in Chicago, said: ‘A single three-hour exposure to blue-enriched light in the evening acutely impacted hunger and glucose metabolism.

‘These results are important because they suggest that manipulating environmental light exposure for humans may represent a novel approach of influencing food intake patterns and metabolism.’
The findings are published in the science journal Sleep and were presented today at an annual meeting of the Associated Professional Sleep Societies in Minneapolis.
The study group comprised 10 healthy adults with regular sleep and eating schedules who received identical carbohydrate-rich meals.

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