Depression may be the brain’s early warning sign of Parkinson’s or dementia
Science Daily
February 11, 2026
Depression in older adults may sometimes signal the early stages of Parkinson’s disease or Lewy body dementia. Researchers found that depression often appears years before diagnosis and remains elevated long afterward, unlike in other chronic illnesses. This suggests depression may reflect early brain changes rather than emotional distress alone.
Verticals
scienceresearch
Originally published on Science Daily on 2/11/2026