# Alzheimer Signs Before Memory Loss

> Early brain changes may signal Alzheimer's years before symptoms.
- Title: Alzheimer Signs Before Memory Loss · Psychologies | Shortify
- Summary: Early brain changes may signal Alzheimer's years before symptoms. Beta-amyloid levels predict brain shrinkage years before dementia symptoms.
- Keywords: alzheimer, beta-amyloid, brain atrophy, neurodegeneration, dementia, apoe-epsilon4, mri, pet, Signs, Memory, Loss, Psychologies
- Source: Psychologies — https://psychologies.com/bien-etre/sante/alzheimer/Alzheimer-bien-avant-les-premiers-troubles-de-memoire-ce-changement-silencieux-pourrait-deja-se-produire-selon-ces-chercheurs-642031
- Author: Guillaume Servant
- Published: 2026-09-24T10:02:24+00:00
- Read time: 1 min
- Topics: alzheimer, beta-amyloid, brain atrophy, neurodegeneration, dementia, apoe-epsilon4, mri, pet
## Early Alzheimer Signs
Scientists found brain changes years before memory loss.

> Beta-amyloid protein accumulates years before dementia symptoms
## Beta-Amyloid Protein
This protein forms plaques in brain tissue.

> Beta-amyloid protein deposits around neurons
## Brain Imaging Study
1,329 people over 50 years old were scanned.

> Researchers followed 1,329 people without dementia
## Brain Shrinkage
Brain regions shrink years before dementia symptoms.

> Brain shrinkage appears in temporal and parietal regions
## Beta-Amyloid Predicts Shrinkage
Higher beta-amyloid levels mean faster brain shrinkage.

> More beta-amyloid predicts brain atrophy in key regions
## Gender and Genetics
Women and APOE-epsilon4 carriers show faster shrinkage.

> Shrinkage is more severe in women and APOE-epsilon4 carriers
## Key takeaway

Beta-amyloid levels predict brain shrinkage years before dementia symptoms.