When most people think about early dementia warning signs, they think about forgetting names or getting lost. But researchers say the sign that appears earliest and gets missed most consistently is something almost nobody is watching for.
Specifically, the gradual inability to detect or identify familiar odors like coffee, flowers, and cleaning products appears years before any memory symptom surfaces.
A landmark study from the Rush Memory and Aging Project found that older adults who scored in the bottom 10% on smell identification tests were more than twice as likely to develop Alzheimer's disease over the following years. The reason is that the olfactory bulb, the brain's smell processing center, is one of the first regions where amyloid plaques accumulate in Alzheimer's disease. It is essentially a window into the brain's earliest pathological changes, visible years before cognitive symptoms emerge.
A simple smell test called the University of Pennsylvania Smell Identification Test is available through neurologists and some primary care offices. It takes 15 minutes. It is not routinely offered. Ask for it by name.
A landmark study from the Rush Memory and Aging Project found that older adults who scored in the bottom 10% on smell identification tests were more than twice as likely to develop Alzheimer's disease over the following years. The reason is that the olfactory bulb, the brain's smell processing center, is one of the first regions where amyloid plaques accumulate in Alzheimer's disease. It is essentially a window into the brain's earliest pathological changes, visible years before cognitive symptoms emerge.
A simple smell test called the University of Pennsylvania Smell Identification Test is available through neurologists and some primary care offices. It takes 15 minutes. It is not routinely offered. Ask for it by name.
Share this with someone who keeps saying their aging parent seems a little off but cannot explain why. ❤️
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