Depression is particularly common at this time of year, but recurrent winter depression is often due to Seasonal Affective Disorder.
Unsurprisingly it’s the most common in the Northern Hemisphere. Light entering our eyes affects the activity of the brain cells that control our internal biological clocks and body rhythms, partly by regulating the production of melatonin, our sleep hormone.
For most people, continual use of light therapy products is needed throughout the darker months and products now come as everyday items, such as table lamps to provide an unobtrusive option. Dawn simulators may help too as they provide a more natural start to the day.
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Does light therapy work?
If part of the problem with SAD is that we’re not getting enough sunlight, can ‘fake’ sunlight, in the form of a SAD lamp, help?
Many people use light or phototherapy which mimics natural daylight. The theory is that this will trick your brain into producing appropriate levels of melatonin and serotonin, thus maintaining a balanced circadian rhythm. Some studies suggest that light therapy is beneficial in 85% of people with SAD.
If self-help isn’t improving the situation, then you may need tests or treatments. If necessary, your GP can arrange other effective treatments.
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