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You are here: Home Health & Fitness Fitness & Sports Tackle winter blues with light therapy

03/12/2008Tackle winter blues with light therapy

Placing a light therapy lamp at home may just be the way to brighten up your mood for the holiday season.

BERLIN / LEIPZIG – Autumn is a time when nature prepares to rest and a lot of people begin to withdraw from social activities. They have no desire to meet with friends after work, preferring to sit lethargically in front of the television before going to bed early. They also find it hard to get up the next morning.

For most people, this period of languor passes without any major effects. But a small minority suffer from out-and-out winter depression. Apart from lethargy and fatigue, the latter group often has symptoms uncharacteristic of depressive disorder.

"They have an increased need for sleep, and also for carbohydrates like chocolate," noted Dieter Kunz, a chronobiologist and head physician in the sleep-medicine department at St. Hedwig Hospital in Berlin. Normally, depression is accompanied by insomnia and loss of appetite.

In Kunz's estimation, 3 to 5 percent of Germany's population suffer from winter depression while another 25 percent are conscious of mood changes.

"These are the same mechanisms that take effect in animals before hibernation," Kunz said. The mechanisms are no longer functional in humans, however, because humans are supplied with food all year round.

True winter depression exists when the symptoms occur regularly in autumn and winter.

"Moreover, the disorder has to last at least two weeks," explained Professor Ulrich Hegerl, a member of the Leipzig-based German Research Network on Depression and Suicidality.

Lack of light causes depression
Light deprivation during the cold months is the cause of people's depressed mood.

"Scientists believe that light controls the melatonin system and influences the serotonin system," remarked Professor Ulrich Voderholzer, chairman of the Berlin-based German Society of Psychiatry, Psychotherapy and Neurology (DGPPN).

1 reaction to this article

Stan Riddick posted: 05-11-2009 | 6:44 PM

The Philips goLITE Blu is excellent for light therapy and can be ordered here http://www.sadlightshop.com . It's much smaller than the device shown in this article and its even rechargable.

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