Depression May Be Early Warning Sign of Brain Changes, Study Finds
Summary
A new study shows that depression might be an early sign of brain changes linked to Alzheimer's disease in older adults. Researchers found that rising levels of a protein called tau were connected to increasing depressive symptoms before memory problems begin.Key Facts
- The study was published in The Journal of Neuroscience.
- It found a link between tau protein buildup and worsening depression in older people with normal thinking skills.
- This connection did not show up in people who already had mild cognitive impairment or Alzheimer's disease.
- Tau is a protein that can disrupt brain cell communication and is linked to Alzheimer's disease.
- Researchers used repeated brain scans and depression questionnaires over time in their study.
- The findings suggest that mood changes may help detect early brain deterioration before memory loss starts.
- Tracking depressive symptoms could complement brain scans and cognitive tests to identify risk for Alzheimer's earlier.
- Experts say recognizing emotional changes is important for healthy aging and dementia risk assessment.
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