Forgetting where you put your keys is not dementia. Walking into a room and forgetting why you're there is not dementia. But the fear that it might be keeps millions of adults over 60 awake at night. Cognitive screening exists to replace that fear with data — and the data, in the vast majority of cases, is reassuring. Here's when to get tested, what the tests actually measure, and how to interpret results without panicking.
Normal Aging vs. Concerning Changes
Normal Age-Related Changes vs. Warning Signs
| Normal After 60 | Potentially Concerning | See a Doctor Immediately |
|---|---|---|
| Occasionally forgetting a name, then remembering later | Frequently forgetting recent conversations entirely | Getting lost in familiar places |
| Taking longer to learn new technology | Unable to follow a recipe you've made for years | Not recognizing close family members |
| Losing your train of thought sometimes | Repeating the same story in one conversation | Significant personality or behavior changes |
| Misplacing keys or glasses | Putting items in bizarre places (keys in the freezer) | Unable to manage medications or finances |
| Slower word recall ("tip of the tongue") | Struggling to follow or join conversations | Loss of awareness that anything is wrong |
When to Get Screened
Medicare covers a cognitive assessment as part of your free Annual Wellness Visit. Beyond that baseline, you should request formal screening if you or someone close to you notices a meaningful change from YOUR baseline — not compared to other people, compared to how you functioned a year or two ago.
What Cognitive Tests Actually Measure
Common Screening and Diagnostic Tests
The Lifestyle Factors That Protect Your Brain
The Lancet Commission on Dementia identified 14 modifiable risk factors that account for roughly 40% of dementia cases. You can't change your genetics, but you can change these:
- Treat hearing loss NOW — untreated hearing loss is the single largest modifiable dementia risk factor. Get a hearing test and wear aids if recommended.
- Exercise 150 minutes per week — aerobic exercise increases brain volume in the hippocampus (memory center) even after 60.
- Maintain social connections — isolation accelerates cognitive decline as much as 15 cigarettes a day affects physical health.
- Manage blood pressure — hypertension in midlife and beyond damages small blood vessels in the brain.
- Sleep 7-8 hours — your brain clears amyloid plaques during deep sleep. Chronic sleep deprivation prevents this cleanup process.
- Challenge your brain with novelty, not just puzzles — learning a new language, instrument, or skill builds cognitive reserve more than crosswords.
If Screening Shows a Problem
Mild cognitive impairment (MCI) is not dementia. Roughly 10-15% of people with MCI progress to dementia per year, meaning 85-90% don't — at least not that year. Early detection is valuable because lifestyle interventions work best at the MCI stage. New medications like lecanemab and donanemab can slow progression in early Alzheimer's by 25-35% when started early. The FDA approved these treatments in 2023-2024, and Medicare covers them. Early detection has never been more clinically actionable than it is in 2026.