A Subtle Early Sign of Alzheimer’s You Might Notice in the Shower
It’s often assumed that the first signs of Alzheimer’s disease are related to memory—forgetting names, struggling to find words, or getting lost in familiar places. While these are common symptoms, research suggests that much earlier and more subtle changes may occur.
One surprising early signal? A reduced ability to recognize familiar smells—even something as simple as your usual soap.
Losing Your Sense of Smell: A Sign Worth Noticing
Imagine opening a shower gel you’ve used for years and suddenly finding the scent faint, unfamiliar, or hard to identify. This change might seem minor, but it could be meaningful.
According to Davangere Devanand of Columbia University, the sense of smell is closely linked to memory and brain function.
In early Alzheimer’s disease, the brain regions responsible for processing odors are among the first to be affected. This can lead to difficulty identifying or distinguishing smells long before noticeable memory loss begins.
In a long-term study involving over 1,000 participants, researchers used a basic smell identification test. Participants were asked to recognize common scents such as:
- Soap
- Smoke
- Rose
- Leather
The findings were significant: individuals who struggled to correctly identify these odors were more likely to develop cognitive impairment later.
A score below 8 out of 12 was considered a potential warning sign. When combined with short memory assessments, this simple smell test proved nearly as informative as more complex tools like brain imaging in some cases.
Why This Matters for Early Detection
One of the biggest challenges with Alzheimer’s is detecting it early enough to intervene effectively.
Smell testing offers several advantages:
- Non-invasive
- Low-cost
- Quick and easy to administer
- No specialized equipment required
According to Jeffrey Motter, incorporating smell tests into routine check-ups could improve early detection and allow for earlier lifestyle or medical interventions.
Which Smells Are Tested?
Which Smells Are Tested?
The study used 12 common scents divided into two categories:
Non-food scents:
- Soap
- Leather
- Lilac
- Smoke
- Gas
- Rose
Food-related scents:
- Cherry
- Clove
- Strawberry
- Menthol
- Pineapple
- Lemon
Consistent difficulty recognizing several of these—especially familiar ones like soap—may warrant a conversation with a healthcare professional, particularly if accompanied by other subtle symptoms such as:
- Mild memory lapses
- Disorientation
- Reduced interest in daily activities
A More Grounded Perspective
A More Grounded Perspective
While this research is promising, it’s important not to jump to conclusions.
A reduced sense of smell can also be caused by many other factors, including:
- Aging
- Nasal congestion or sinus issues
- Smoking
- Past infections (such as respiratory viruses)
Smell loss alone does not mean someone has or will develop Alzheimer’s—but it can be one piece of a larger picture.
Final Thought
Final Thought
Something as routine as taking a shower might offer small clues about your health. Paying attention to changes—especially persistent ones—can be useful.
But the key is context: if multiple symptoms appear together or worsen over time, that’s when it makes sense to seek medical advice.
Early awareness, not alarm, is what makes the difference.
