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Home > Seasonal Affective Disorder
Seasonal Affective Disorder
by Dave Foreman
Seasonal Affective Disorder (SAD) is
a form of depression that begins in
autumn or early winter and generally
lasts from 5-7 months until spring.
The early loss of sunlight in the winter
appears to induce chemical changes in
the brain that bring on depression. When
the days grow longer in the spring,
symptoms disappear, not reappearing
until the next autumn or winter.
This seems to be one of the more
effective treatments - and as far as
I am concerned, this is still a “natural
remedy.”Bright Light Therapy consists
of exposure of up to 10,000 lux, coolwhite
florescent light for at least 30
minutes a day (Arch Gen Psychiatry 1998
Oct;55(10):875-82). This type of light
therapy requires special lamps that
provide up to 20 times the normal
brightness of home or office lighting.
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