What causes depression?

The exact etiology is unknown, although multiple factors are suspected to contribute:

  • Environmental factors
  • Serotonin levels
  • Newer models hint inflammatory processes may play a role

Medical illness may mimic or cause depression. These can include: 

  • Thyroid disorders
  • Stroke
  • Adrenal disorders
  • Metabolic disorders
  • Substance abuse
  • Chronic pain

Learn about behavioral health services at Swedish.