Seasonal affective disorder (SAD) is a type of depression that follows a seasonal pattern, usually starting in late fall and lifting in spring. In Edmonton, where midwinter days have fewer than eight hours of daylight, many people notice lower energy and mood. SAD goes beyond the winter blues: it brings weeks of low mood, oversleeping, carbohydrate cravings, withdrawal and difficulty functioning. Light therapy, counselling such as CBT, daily routines and, for some people, medication can make a real difference.
Key takeaways
The key feature is the pattern: symptoms return around the same time each year and ease when daylight increases.
Many Albertans feel a bit flatter in winter. That is normal. The winter blues are mild, come and go, and do not stop you working, parenting or enjoying life. SAD is more intense, lasts weeks and makes everyday life feel like a struggle. If you are unsure, a doctor or counsellor can help you tell the difference.
Shorter days and less sunlight can disrupt your body clock, lower serotonin and increase melatonin, affecting mood, sleep and energy. Cold weather, slippery roads and darkness also reduce activity and social contact, which can deepen low mood. Newcomers from warmer, sunnier countries may find their first Edmonton winters especially hard.
Using a bright light box, commonly 10,000 lux for about 20 to 30 minutes each morning, is a well-researched treatment for SAD. Speak with your doctor before starting, especially if you have eye problems, take medications that increase light sensitivity, or have a history of bipolar disorder.
CBT adapted for SAD helps you notice winter-related thinking patterns, such as “there is no point doing anything until spring,” and plan activities that protect your mood. Research suggests its benefits may last into following winters.
For moderate to severe SAD, a doctor may recommend antidepressant medication, sometimes starting before symptoms usually begin.
If you know winter is hard, start in September or October: set up your light box, book counselling, plan activities and tell someone you trust what to watch for.
Talk to a doctor or counsellor if low mood lasts more than two weeks, affects work or relationships, or comes with thoughts of hopelessness. If you are thinking about suicide, call or text 9-8-8 or call 911.
At Disha, depression therapy and online counselling make it easier to get support during the darkest months, without driving on icy roads. See also signs of depression in adults.
Talk to a Registered Clinical Social Worker
Winter weighing on you? Book online or in-person counselling in Edmonton and get support through the dark months.
Yes. SAD is a recognized pattern of depression that returns at the same time each year, most often in fall and winter.
Research supports bright light therapy for many people with SAD. Check with your doctor before starting.
Yes. CBT adapted for SAD is an effective treatment and may help prevent symptoms in future winters.
Often in October or November, easing by March or April, though timing varies.
Many Canadians have low vitamin D in winter. Ask your doctor whether testing or a supplement is right for you.
Disha Counselling & Wellness Centre is at 3818A 97 St NW #203, Edmonton, AB T6E 6N2, and offers online counselling across Alberta. Find us on Psychology Today and eMentalHealth.ca, watch short videos on YouTube and TikTok, or follow us on Instagram, LinkedIn and Facebook.
Reviewed by Mukesh Mishra, MSW, RCSW, Registered Clinical Social Worker and ACSW-approved RCSW supervisor at Disha Counselling & Wellness Centre. This article is general information and is not a substitute for individual professional advice.
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