Everyday memory lapses like misplaced keys or forgotten names are frequently misinterpreted as early indicators of dementia, but neuroscience experts emphasize that actual early cognitive changes can be reversed if addressed promptly. Dr. Tommy Wood, a professor of pediatrics and neuroscience at the University of Washington, stated that minor forgetfulness usually stems from fatigue or stress rather than the onset of a neurodegenerative disease.
Understanding Memory Formation and Retrieval
Speaking at Strong New York, the city’s largest annual fitness and wellness festival, Dr. Tommy Wood explained that minor forgetfulness often occurs because an individual is stressed or tired and not paying attention. “If you want to remember something … you need to actually be focused, be paying attention,” Wood told Fox News Digital. “You need to tell your brain it’s important to remember it.” Memory formation operates across three distinct stages: encoding to form a memory, consolidation to store it, and retrieval to access it. Cognitive changes during aging are not inevitable, and proactive lifestyle steps taken early can help maintain or even restore brain function.
When someone experiences stress or sleep deprivation, the primary issue is retrieval. The memory exists within the brain, but the individual struggles to access it in the moment. In contrast, people developing a neurodegenerative disease often fail to encode the memory initially. “They don’t even remember or notice that there’s something going on,” Wood said. “If you’re noticing something’s not quite right, that’s usually a good sign.”
Preventable Risk Factors and Medical Mimics
Dementia is clinically defined as a loss of cognitive function severe enough to impair an individual’s ability to manage daily life independently. Alzheimer’s disease and vascular dementia account for 70% to 90% of cases, with many patients exhibiting signs of both conditions. Studies demonstrate that altering lifestyle and health variables—especially those related to heart and metabolic wellness, alongside visual and auditory impairments—can avoid half of all dementia instances at minimum.
Wood emphasized that addressing physical health issues—such as acquiring hearing aids or undergoing cataract surgery—directly lessens the risk of cognitive decline. “If you expect decline, you won’t do the things that will prevent decline from happening,” Wood told Fox News Digital. “Believing that it’s possible means you’ll actually engage in these processes, and then through that, you can prevent a lot of this decline.”
This attention to reversible triggers mirrors recommendations from the Cleveland Clinic and Mayo Clinic, which point out that several treatable medical issues can produce symptoms resembling early dementia or contribute to subjective cognitive decline. Common reversible causes include:
- Vitamin deficiencies: Low levels of vitamin B12 or B1, which are essential for nerve and brain function.
- Endocrine disruption: Thyroid problems, particularly hypothyroidism, which slows brain metabolism.
- Medication side effects: Interactions from sedative drugs, anticholinergics, or polypharmacy in older adults.
- Mental health conditions: Severe anxiety and depression, which can trigger pseudodementia—a condition characterized by memory lapses and cognitive slowing that clears up once the psychological issue is treated.
- Metabolic and kidney issues: Chronic kidney or liver failure, as well as electrolyte imbalances, which alter brain chemical levels.
When people notice shifts in their executive function or brain fog, the Cleveland Clinic stresses that prompt clinical intervention is essential. “How your brain functions on a day-to-day basis is kind of the output of everything your brain is dealing with,” Wood noted. “But if you start to notice something, there’s still time to make some changes if you need to.”
Frequently Asked Questions About Memory Lapses
Are everyday memory lapses always an early sign of dementia?
No. Neuroscience experts like Dr. Tommy Wood note that minor forgetfulness, such as forgetting names or misplacing keys, is frequently caused by fatigue, stress, or a lack of attention rather than a neurodegenerative disease.
What is the difference between stress-related forgetfulness and dementia?
Stress-related forgetfulness is usually an issue with retrieval, meaning the memory exists in the brain but is hard to access due to tiredness or distraction. In contrast, neurodegenerative conditions often involve a failure to encode the memory in the brain in the first place.
Can cognitive decline from early memory issues be reversed?
Yes. Research indicates that at least 50% of dementia cases can be prevented or addressed by modifying lifestyle and health risk factors, treating physical ailments like hearing and vision loss, and correcting underlying vitamin deficiencies or thyroid problems.
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