関連キーワード
1. Seasonal affective disorder (SAD)
2. Mood disorders
3. Mental health
4. Depression
5. Light therapy
6. Biological rhythms
7. Circadian rhythm
8. Photoperiodism
9. Seasonality
10. Melatonin
11. Serotonin
12. Dopamine
13. Psychological well-being
14. Emotional regulation
15. Sleep patterns
16. Vitamin D
17. Winter blues
18. Weather conditions
19. Climate change
20. Prevalence
21. Risk factors
22. Diagnostic criteria
23. Treatment options
24. Psychotherapy
25. Medication
26. Cognitive-behavioral therapy
27. Coping strategies
28. Quality of life
29. Workplace implications
30. Public health measures