Seasonal Affective Disorder

What is SAD?

Seasonal Affective Disorder (SAD) represents a type of depression that emerges at specific times each year, typically around season changes. People who experience it frequently feel low on energy or somewhat off during these stretches.

Sometimes, individuals notice symptoms emerging in spring and summer, often broadly called summer-pattern SAD. While some people experience mild, noticeable discomfort, others endure more severe disruptions to mood, cognition, and daily routines, which can eventually sometimes spiral into major depressive episodes.

Seasonal Affective Disorder is considered a form of depression tied to specific times of the year. The signs usually last four to five months annually and can vary in severity for each person. Typical indicators are:

• Lack of interest in once-enjoyed activities
• Changes in eating habits or weight
• Sleep disturbances
• Fatigue or restlessness
• Low energy levels
• Feelings of despair or worthlessness
• Trouble concentrating
• Thoughts of self-harm or suicide

Specific symptoms of winter-pattern SAD may involve:

• Common signs of winter-onset SAD can include:
• Cravings for carbohydrates
• Weight gain
• Desire for isolation

Summer-pattern SAD symptoms might include:

• Insomnia
• Reduced appetite with weight loss
• Restlessness
• Heightened anxiety
• Outbursts of aggressive behavior

What Causes SAD?

SAD appears to affect more women than men and is often seen in individuals with existing mental health conditions, such as major depression or bipolar disorder. Though it can run in families, it’s not classified as a hereditary disorder in the traditional sense.

Seasonal affective disorder seems to really impact women more frequently than men and often occurs alongside mental health issues like major depression or bipolar disorder. While it may appear in family members, it isn’t regarded as a genetic disorder in the usual way.

People experiencing SAD often struggle to produce or regulate serotonin properly. In winter months, less daylight can worsen this disturbance. Also, elevated melatonin levels—linked to grogginess—may further upset both sleep quality and emotional balance. This cycle feeds back, undermining mood, rest routines, and vitality.

Treating Seasonal Affective Disorder

There are four primary treatment approaches used to manage SAD, which may be used alone or in combination depending on individual needs:

• Four main strategies exist to address SAD, and they can be applied individually or paired together based on each person’s unique requirements:
• Talk therapy (psychotherapy)
• Antidepressant medications
• Vitamin D supplements when levels are low