A systematic review examines the relationship(s) between depression and dementia in old age, exploring multiple possible explanations:
- Depressive symptoms may be a risk factor for dementia.
- Depressive symptoms may be a prodromal symptom of dementia.
- Depressive symptoms may be simply coincidental in dementia, connected only by common underlying risk factors.
“It seems unlikely that there is no connection at all”.
Wiels, W. Baeken, C. [and] Engelborghs, S. (2020). Depressive symptoms in the elderly-an early symptom of dementia? A systematic review. Frontiers in Pharmacology. February 7th 2020; Vol.11: 34.