Maintaining habits such as reading and writing throughout life is associated with a lower risk of Alzheimer’s and mild cognitive impairment.
A lifetime dedicated to reading, writing and deeply engaging with language can significantly reduce the risk of dementiaaccording to new research published in Neurology. The suggests that continued “cognitive enrichment,” from childhood to old age, can delay or even prevent diseases like Alzheimer’s.
Researchers followed 1,939 adults with an average starting age of 80 for almost eight years. Participants were assessed using a cognitive enrichment scale that mediates intellectual engagement throughout life, including reading books, visiting libraries and museums, learning foreign languages and using dictionaries, says the .
The results revealed that individuals with the highest scores on the enrichment scale presented a 38% lower risk of developing Alzheimer’s disease and a 36% lower risk of mild cognitive impairment compared to those with the lowest scores.
On average, higher levels of lifelong learning were associated with a five-year delay in Alzheimer’s and seven years in mild cognitive impairment. Neuropsychologist and co-author Andrea Zammit says the study examined mental stimulation across multiple life stages, highlighting the long-term impact of intellectually rich environments.
“Our results suggest that cognitive health in old age is strongly influenced by lifetime exposure to intellectually stimulating environments,” said Zammit.
The study also included brain analyzes post-mortem of participants who died during the research period. Those with the highest rates of childhood enrichment showed signs of protection against the accumulation of proteins typically associated with Alzheimer’s disease.
Importantly, the researchers examined whether socioeconomic status (SES) explained the protective effect. Although SES has shown modest independent links to cognition in old age, the benefits of cognitive enrichment appear to be go beyond financial advantages or isolated educational. The team concluded that enrichment reflects ongoing intellectual engagement over time, not simply access to resources.
However, the study does not prove a direct cause-and-effect relationship. Researchers warn that the risk of dementia is influenced by multiple factors, including sleep, physical activity and diet. Additionally, the study relied on participants’ self-reports of lifestyle habits, which may not always be accurate.
