What Is Seasonal Affective Disorder (SAD)?
Seasonal Affective Disorder (SAD) is a form of depression that appears at the same time each year—most commonly during late fall and winter. It is closely tied to reduced natural light exposure and disruptions in the body’s internal clock (circadian rhythm). Lower sunlight levels can affect serotonin and melatonin—chemicals that regulate mood and sleep.Although anyone can experience SAD, it is more common in:
- Adults under age 50
- People living in northern climates
- Individuals with a history of depression or anxiety
- Women (diagnosed more often than men)
Common Symptoms of Seasonal Depression
SAD often resembles major depression, but symptoms occur seasonally—typically worsening in winter and improving in spring.
Emotional Symptoms
- Persistent low mood
- Loss of interest in activities you usually enjoy
- Irritability or increased anxiety
- Feelings of hopelessness or disconnection
Physical & Behavioral Symptoms
- Sleeping more than usual
- Low energy or fatigue
- Craving carbohydrates or overeating
- Weight gain
- Difficulty concentrating
If these symptoms disrupt your daily life, it’s important to reach out for care. SAD is a medical condition—not something you need to “tough out.”
How Is SAD Diagnosed?
There is no single test for SAD. Instead, your clinician will assess:
- Symptom patterns
- Timing and seasonal changes
- Medical history
- Lifestyle factors that may influence mood
At
SoNE HEALTH Medical Group, our primary care providers and behavioral health partners use a whole-person approach to evaluate and support your mental health.
Effective Treatments for Seasonal Depression
The good news:
SAD is highly treatable, and many patients experience significant improvement with the right plan.
Light Therapy
A specialized light box simulates natural sunlight and helps regulate mood-related chemicals. Many people see improvement within 1–2 weeks.
Cognitive Behavioral Therapy (CBT)
CBT helps individuals develop coping strategies, reduce negative thought patterns, and build resilience throughout the winter months.
Medication
Antidepressants may be recommended when symptoms are moderate to severe or when other treatments are not sufficient on their own.
Vitamin D Support
Vitamin D deficiency is common during winter and may worsen symptoms. Your provider can help determine whether supplementation is appropriate.
Lifestyle Strategies
- Spend time outdoors, even on cloudy days
- Increase daily physical activity
- Keep a consistent sleep schedule
- Stay socially connected
- Set small, achievable goals during low-energy periods
How to Support Someone Experiencing SAD
Seasonal depression affects more than just the individual—it can impact families, friends, and caregivers. You can help by:
- Listening without judgment
- Encouraging them to seek professional help
- Offering support with daily tasks
- Planning activities that bring light or movement into their day
When to Seek Professional Help
If you or someone you care for notices persistent sadness, significant changes in mood or behavior, or difficulty managing daily responsibilities, it may be time to consult a healthcare professional. Early support can prevent symptoms from worsening.
SoNE HEALTH Medical Group is here to help. Our care teams provide comprehensive support for both physical and emotional wellness, working with each patient to develop individualized treatment plans that improve health, function, and quality of life.
You’re Not Alone—We’re Here for You
Seasonal Affective Disorder is common, treatable, and nothing to be ashamed of. If you believe you may be experiencing SAD, we encourage you to reach out.
Contact your SoNE HEALTH Medical Group provider to schedule a visit or discuss treatment options. Together, we can help you feel better—this season and beyond.
