The National Institute of Health has done on this disease in the 1970s, although it had already existed for centuries. This unit implements sad to have asked people when they eat and sleep most noticeable during the winter.
And new research experts discovered that the best way to combat this disorder cognitive behavioral therapy, or "talk therapy" to treat the mixture of the use of antidepressants and light therapy, approaches add traditional SAD.
The symptoms of SAD are not just winter blues and subtle changes in eating and sleeping, but the craving for sweets and strength, fatigue, irritability, social withdrawal and depression, changes disappear in spring and summer.
Although there are many theories about SAD, experts highlight that production of melatonin, a sleep hormone related to depression, may increase during the winter. Meanwhile, the amount of serotonin is a brain chemical triggered by sunlight, expected to increase the lack of light.
So that the light intensity and temperature, proves to be a role in the development of the game may vary depression associated with SAD. It is also known that the percentage of people with mood disorders with a width of more, as shorter days seem to trigger symptoms.
There are several ways to treat SAD and experts believe that the first approach should be the therapy. But patients with seasonal depression may respond better to treatment when treatment is combined with medication.
