A Holistic Guide to Managing Winter Blues
What is Seasonal Affective Disorder?
Seasonal Affective Disorder (SAD), often
referred to as “winter depression,” is a type
of depression that’s related to changes in
seasons. It begins and ends at about the
same times every year, typically starting in
the late fall or winter and remitting in
spring and summer. While less common,
some people experience “summer SAD,”
which presents in the opposite pattern
(Rosenthal et al., 1984).
Key Characteristics:
– Timing: Symptoms usually appear during the fall and winter
months when there’s less natural sunlight (Perry et al., 2005).
– Prevalence: Affects about 5% of the American population,
with women diagnosed four times more often than men (Rohan
et al., 2009).
– Demographics: More common in northern latitudes and
among younger adults (Avery et al., 2006).
– Duration: Symptoms typically last 4-5 months during fall and
winter, though summer SAD occurs in reverse (Golden et al.,
2005).
Common Symptoms:
– Persistent sadness or low mood (Kasper et al., 1989).
– Loss of interest in activities you used to enjoy (American
Psychiatric Association, 2013).
– Fatigue and low energy (Wirz-Justice et al., 2006).
– Difficulty concentrating (Perry et al., 2005).
– Changes in sleep patterns (oversleeping in winter SAD) (Lam,
2006).
– Changes in appetite (craving carbohydrates, weight gain)
(Meyer et al., 2008).
– Social withdrawal (Rohan et al., 2009).
– Feelings of hopelessness or worthlessness (Beck, 1976).
Causes and Triggers:
The exact cause of SAD isn’t fully understood, but researchers
believe it’s related to:
– Circadian rhythm disruption: Reduced sunlight can disrupt
your body’s internal clock (Wirz-Justice et al., 2006).
– Serotonin levels: Less sunlight may cause a drop in serotonin,
a brain chemical affecting mood (Ostrow et al., 2004).
– Melatonin imbalance: Changes in seasonal light can throw off
your body’s balance of melatonin, which regulates sleep
(Rosenthal and Wehr, 1987).
– Vitamin D deficiency: Limited sunlight exposure reduces
Vitamin D production (Holick, 2007).
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