How Extreme Daylight and Darkness Affect Arctic Residents

The Arctic's radical photoperiod—midnight sun in summer, polar night in winter—profoundly impacts human physiology and psychology.

Seasonal Affective Disorder (SAD)

Up to 20% of Arctic residents experience SAD, a depression triggered by seasonal light changes. Symptoms: low mood, fatigue, hypersomnia, appetite changes, irritability, concentration difficulties, suicidal thoughts. Treatments include light therapy (10,000 lux), antidepressants, and psychotherapy.

Other Mental Health Risks

• Anxiety, bipolar disorder, schizophrenia, substance misuse, and elevated suicide rates are documented.

Coping Strategies

• Regular exercise (indoor/outdoor).
• Consistent sleep hygiene (blackout curtains, melatonin).
• Balanced nutrition (vitamin D supplementation).
• Limit alcohol.
• Social connection—community events, support groups.
• Professional counseling.

Resilience is built through routine, community, and proactive mental-health care.