Archive · 16 Aug 2025
Study Links Loss of Smell to Alzheimer's Disease
Scientists are studying why losing your sense of smell might be an early warning sign for Alzheimer's disease.
They found that the brain's immune cells attack the nerve connections that help you smell.
These connections are between two parts of the brain.
The immune cells remove these connections, which could explain why the sense of smell fades.
The study suggests that by studying these changes, doctors might be able to diagnose Alzheimer's earlier, before memory problems start.
This could lead to better treatments.
Study suggests loss of smell could be an early sign of Alzheimer's disease.
Researchers found brain's immune cells attack nerve fibres crucial for smell.
Microglia remove connections between the olfactory bulb and locus coeruleus.
Changes in nerve fibre membranes signal microglia to break them down.
Findings could lead to early diagnosis and treatment of Alzheimer's.
- Who
- Researchers at DZNE and LMU in Germany conducted the study.
- What
- Study explains the link between loss of smell and Alzheimer's disease.
- When
- The study's findings are recent.
- Where
- The research was conducted in Germany.
- Why
- To understand why loss of smell is an early indicator of Alzheimer's.
- Research Institutions
- DZNE and LMU
- Focus
- Alzheimer's disease and sense of smell
- Key Finding
- Immune cells attack nerve fibres
- Affected Areas
- Olfactory bulb and locus coeruleus
- Significance
- Early diagnosis and treatment potential