Shedding Light on Seasonal Affective Disorder (SAD)

seasonal affective disorder

Autumn has officially arrived and this Vancouver weather couldn’t make that any more apparent. Welcome back, rain and lush foliage! While our city’s thirsty soil is greeting the rain with open arms, the colder weather, shorter days, and grayer skies are cause for seasonal affective disorder, or SAD, in nearly 20% of the population.

SAD is a type of depression that is related to the change in seasons, usually occurring in the fall/winter and remitting in the spring/summer. While researchers are not exactly sure what causes SAD, it has been linked to a lack of sunlight. Shorter days with less light may increase melatonin, which will deregulate sleep-wake cycles and circadian rhythms, and decrease serotonin production, which can affect mood. ...Read More