Explain It to Me Living in a winter bummerland
6 snips
Feb 8, 2026 
Kelly Rowan, a professor of psychological science researching seasonal affective disorder, unpacks the winter blues. She explains the continuum from mild winter low mood to clinical seasonal depression. She covers how shorter days shift circadian clocks, who is most vulnerable and why symptoms peak in midwinter. She outlines evidence-based treatments like light therapy, CBT, and meds, plus practical routines to cope.
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Day Length Disrupts The Body Clock
- Shorter days shift our circadian clock and make mornings feel like it's still time to sleep.
- Day length is the strongest environmental predictor of winter mood changes, more than temperature.
Winter Symptoms Fall On A Continuum
- People experience a continuum from mild winter blues to clinical seasonal affective disorder (SAD).
- SAD is the extreme end where seasonal patterns cause clinical depression and significant interference.
Try Morning Light Therapy Safely
- Use timed bright light therapy (10,000 lux) first thing in the morning to reset circadian timing.
- Start light therapy under a clinician's supervision because it can cause side effects like headaches or mania.
