12/08/2025
When the Light Fades, So Can Our Mood
Seasonal Affective Disorder—or SAD—is a form of depression that follows the seasons, most often showing up in fall and winter when daylight thins and we spend more time indoors. It often begins in the early 20s, but kids and teens can experience it too.
SAD doesn’t always look like classic sadness. It can show up as social withdrawal, loss of interest in once-favorite activities, carb cravings, low energy, weight gain, oversleeping, and a deep sense of heaviness or fatigue. The key clue is the pattern: symptoms that rise and fall with the calendar.
Researchers believe SAD is linked to disruptions in the body’s circadian rhythm—our internal sleep-wake clock—triggered by reduced light. Less light in, less balance inside.
What Helps
Treatment depends on severity and may include more daylight exposure, light therapy with a medical-grade light box, talk therapy (especially CBT), and sometimes medication. For mild cases, simply getting outside each day can make a real difference. Light still works quietly, even in winter.
How Parents Can Support Kids and Teens
Consistency is the anchor here. Encourage outdoor movement. Keep sleep schedules steady. Offer nutrient-dense foods instead of letting sugar run the menu. Be patient with school performance. Spend low-pressure time together. And most of all—talk about it. Naming the struggle shrinks it.
SAD is real, it’s seasonal, and it’s treatable. Winter may pull the curtain early—but it doesn’t get the final word.
To Learn More (Trusted Sources):
• Child Mind Institute – Seasonal Affective Disorder
https://childmind.org/article/seasonal-affective-disorder/
• KidsHealth – Seasonal Affective Disorder (SAD)
https://kidshealth.org/en/parents/sad.html
• HealthyChildren.org (American Academy of Pediatrics) – Winter Blues & SAD
https://www.healthychildren.org/English/health-issues/conditions/emotional-problems/Pages/Winter-Blues-Seasonal-Affective-Disorder-and-Depression.aspx