A study published February 11, 2026, in Neurology® found that people who stayed mentally active throughout life had a lower risk of Alzheimer’s disease and slower decline in memory and thinking skills. The study does not prove that lifelong learning prevents Alzheimer’s disease. However, it does suggest that activities like reading, writing, and learning new skills may help support brain health in older age.
Researchers followed nearly 2,000 adults with an average age of 80 who did not have dementia at the start of the study. Over an average of eight years, they tracked who developed Alzheimer’s disease or mild cognitive impairment, a condition that often comes before dementia.
Participants completed surveys about mentally stimulating activities and learning resources during three stages of life. Childhood enrichment included being read to, reading books, having access to newspapers or atlases at home, and learning a foreign language. Middle-aged enrichment included having a library card, magazine subscriptions, and visiting museums or libraries. Later-life enrichment focused on activities like reading, writing, playing games, and income from Social Security, retirement, or other sources.
Researchers combined this information into a score that showed how mentally active each person had been throughout their life. Those with the highest scores were much less likely to develop Alzheimer’s disease or mild cognitive impairment than those with the lowest scores.
Higher enrichment was also linked to later onset of symptoms. Participants with the highest scores developed Alzheimer’s disease at an average age of 94, compared to age 88 among those with the lowest scores. Mild cognitive impairment appeared about seven years later in the higher-scoring group.
“Our findings suggest that cognitive health in later life is strongly influenced by lifelong exposure to intellectually stimulating environments,” said study author Andrea Zammit, PhD, a neuropsychologist at Rush University Medical Center.
The study results add to growing evidence that brain health is influenced by experiences throughout a person’s life. Expanding access to enriching places and activities that challenge the brain may help support brain health as people age.
Key Takeaways
- Staying mentally active throughout life may be linked to a lower risk of Alzheimer’s disease and slower cognitive decline.
- In this study, people with the highest lifelong mental enrichment developed Alzheimer’s disease and mild cognitive impairment about seven years later than those with the lowest enrichment.
- The study does not prove that lifelong learning prevents Alzheimer’s disease, but it suggests that staying mentally active may support brain health in older age.
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