Commonly referred to as SAD, Seasonal Affective Disorder is a type of depression directly related to the lack of sunlight during the winter months. Researchers believe that circadian rhythms, or the body’s internal clock, as well as melatonin (a hormone which regulates wakefulness) and serotonin (a neurotransmitter linked to feelings of happiness), all play a role in this condition.
According to the Canadian Mental Health Association, between two and three per cent of the Canadian population suffers from SAD, and approximately 15 per cent will experience a milder form of the disorder during their lifetime.
Vitamin D supplements
Vitamin D is essential in maintaining healthy bones, and helps to...