A primary mood disorder characterized by a depressed mood and/or a markedly decreased interest or pleasure in normally enjoyable activities most of the day, almost every day for at least 2 weeks, and causing significant distress or impairment in daily functioning. The geriatric population can have variable presentations and comorbid conditions that present different challenges than treating depression in the younger population.
- 2–10% of community-dwelling elderly
- 5–10% seen in primary care clinics
- 10–37% of hospitalized elderly patients
- 12–27% of nursing home residents
- The Global Burden of Disease Study (2015) estimated the prevalence of depressive disorders among older adults (>60 years old) of 4–6% among males and 5–8% among females.
- Suicide is the 11th leading cause of death in the United States for all ages. The elderly account for 24% of all completed suicides with the highest rates for males aged >85 years.
Etiology and Pathophysiology
- A complex interaction between heritable, biologic, psychological, and environmental factors
- Abnormalities in neurotrophins, neurogenesis, neuroimmune systems, and neuroendocrine systems
Possible mechanisms, including genetic influences on monoamine transmission and associated transcriptional and translational activity and dysregulation in biologic processes and proteostasis involving C-peptide, FABP-liver, and ApoA-IV proteins
- Female sex
- Lower socioeconomic status
- Widowed, divorced, or separated marital status
- Chronic physical health/chronic pain
- Family history of depression
- Death of a loved one
- Functional/cognitive impairment
- Lack/loss of social support/social isolation
- Significant loss of independence
- Insomnia/sleep disturbance
Limited, but growing body of evidence suggest these interventions to prevent depression in the elderly:
- Following traditional dietary patterns (e.g., Mediterranean, Japanese, or Norwegian)
- Increasing the consumption of foods rich in omega-3 polyunsaturated fatty acids (e.g., salmon, tuna, sardine, mackerel)
- Engaging in regular physical activity and exercise
Commonly Associated Conditions
Chronic disease (e.g., coronary artery diseases [CAD], cerebrovascular diseases [CVD], cancer, Parkinson disease)
There's more to see -- the rest of this topic is available only to subscribers.