Welcome
The encyclopedia of memory: clear, trustworthy information about how memory works, dementia and Alzheimer's, caregiving, and brain health, plus daily updates and a weekly research roundup.
Today's update (Thursday, October 15, 2026): How Memory Works, and What Alzheimer's Changes
A plain-language look at how the brain makes and stores memories, why Alzheimer's often affects recent memories first, and one simple habit you can start today.
A plain-language look at how the brain makes and stores memories, why Alzheimer's often affects recent memories first, and one simple habit you can start today.
Popular topics
- Alzheimer's Disease
- 10 Early Warning Signs of Alzheimer's and Dementia
- What Is Dementia?
- Lecanemab (Leqembi)
- Reducing Dementia Risk: The 14 Risk Factors
- Sundowning
- Communicating with Someone with Dementia
- Mild Cognitive Impairment (MCI)
Browse the encyclopedia
- How Memory Works — How we form, store and recall memories, and what changes with age.
- Conditions — Dementia types and other conditions that affect memory.
- Symptoms & Stages — Recognizing warning signs and what to expect over time.
- Diagnosis & Tests — How memory problems are evaluated.
- Treatments — Medicines and non-drug approaches.
- Research & Trials — Where the science is heading and how to take part.
- Brain Health & Prevention — What the evidence says about lowering risk.
- Caregiving — Practical help for people caring for someone with dementia.
- Living with Memory Loss — For people living with a diagnosis.
- Memory Improvement — Practical techniques anyone can use.
- Resources — Helplines, organizations and tools.