Memory Digest Weekly: Brain Patterns That May Flag Risk, "Mini-Strokes" and Memory, and an Alzheimer's Blood Test

Sent November 5, 2026 · All issues

Hello again. Here's this week in memory and dementia research in plain words, a few new guides, one tip, and a free printable. It takes about three minutes to read.

This week's research, in plain words

1. Brain activity patterns that may flag Alzheimer's risk years early. Stanford researchers compared brain scans taken at rest from "super agers" (people 75 and older with unusually sharp memory) and people with Alzheimer's, and turned the difference into a score. In more than 1,300 healthy adults aged about 55 to 70, those whose patterns looked more like Alzheimer's were more likely to decline over the following years. It's a research tool for now, not a test your doctor can order, and a score is not a diagnosis. Read our summary · Source: Stanford Medicine

2. A "mini-stroke" is worth a call to the doctor, for memory too. A study of more than 113,000 adults in Ontario who had a transient ischemic attack (TIA), a brief stroke-like spell that passes in minutes, found they had a 34% higher risk of dementia over about seven years. They were about three times more likely to develop dementia than to go on to have a stroke. It shows a link, not proof of cause, and most people who had a TIA did not develop dementia. If stroke signs appear, call 911 right away, and if they pass after a few minutes, still tell a doctor right away, as the CDC advises. Read our summary · Source: American Academy of Neurology

3. What an Alzheimer's blood test can and can't tell a healthy person. Pooling six studies of 2,684 older adults with no memory problems, researchers found that higher levels of a blood protein called p-tau217 were strongly linked to later thinking problems. The researchers say these tests aren't currently recommended for people without symptoms, because there's no proven treatment yet to prevent decline. Their advice for now is the same whatever the result: exercise, eat well and prioritize sleep. Read our summary · Source: Mass General Brigham via ScienceDaily

New in the encyclopedia

• Tax Breaks for Dementia Caregivers: the deductions and credits to ask your tax preparer about.
• Medicaid Spend-Down for Nursing Homes and Memory Care, including the five-year look-back on gifts (Ohio's is 60 months too).
• When Siblings Disagree About Dementia Care, worth a read before the holidays.
• Sleep Medicines and Dementia: Melatonin, Trazodone and What to Avoid, and what to try first.
• Brain Atrophy (Shrinkage) on a Scan: What It Means, if that phrase showed up in a report.

One caregiving tip: when they say "I want to go home"

Many people with dementia ask to go home, even in the house they've lived in for decades. "Home" often means a feeling of safety, or a home from long ago, not an address. Arguing ("You are home") rarely helps. Instead, respond to the feeling: "You're missing home. Tell me about it." Reassure them they're safe, check for a need like hunger, tiredness, pain or the toilet, and gently shift to a photo album, a favorite song or a short walk. If the request comes with a sudden change in behavior or confusion, contact their doctor. Read the full guide.

Free printable: Questions to Ask the Doctor

A large-print list of questions to bring to a memory or dementia appointment. Print it, jot down your own questions and notes, and take it with you, especially if this week's research has raised questions for you. Download the PDF or see all free printables.

Have a question or a correction? Write to ask@memorydigest.com. Need help now? The Alzheimer's Association 24/7 Helpline is 800-272-3900.

Memory Digest shares general information only, not medical advice. Please talk with a doctor about any health concern.