Smoking and Dementia: Key Findings on Late-Life Quitting
Quitting Smoking Later in Life Significantly Reduces Dementia Risk, New Study Finds
October 19, 2025 – In a landmark study published today, researchers at University College London (UCL) have demonstrated a compelling link between smoking cessation and a reduced risk of dementia, even for those who quit later in life. The findings offer a powerful message of hope and underscore the profound impact lifestyle choices can have on long-term cognitive health.
The research,analyzing data from nearly 9,400 participants over 40 – a cohort of 4,700 smokers who quit and a control group of 4,700 continuing smokers – revealed a meaningful divergence in cognitive decline rates after six years. Initially, both groups exhibited similar rates of decline. Though, after half the smokers successfully quit, a striking difference emerged.
Key Findings:
* Reduced Cognitive Decline: Former smokers experienced a 20% slower rate of memory decline compared to those who continued smoking.
* Improved Language Skills: Speech and language skills deteriorated at roughly half the rate in the group that quit.
* Vascular Health is Key: The positive effects are believed to stem from the restoration of healthy blood flow to the brain, as smoking severely damages the blood vessels responsible for delivering vital oxygen.
“It’s never too late to reap the benefits,” stated Dr. Mikaela Bloomberg, lead author of the study.”Quitting smoking has a demonstrable and positive impact on cognitive function, even when initiated later in life.”
The study highlights the critical role of vascular health in maintaining cognitive function. Smoking’s damaging effects on blood vessels can significantly impair brain health, increasing the risk of dementia. By quitting, individuals can begin to reverse this damage and protect their cognitive future.
This research builds upon a growing body of evidence demonstrating the link between lifestyle factors and dementia risk. While genetic predisposition plays a role,modifiable risk factors like smoking,diet,and exercise offer individuals agency in safeguarding their cognitive health.
For further data on dementia risk prediction, see our recent article on the use of AI in forecasting dementia risk. [Linktorelatedarticle-[Linktorelatedarticle-[Linktorelatedarticle-[Linktorelatedarticle-dementierisico-voorspellen-met-ai]
Source: BusinessAM.be – https://businessam.be/stoppen-met-roken-vermindert-risico-op-dementie-zelfs-op-latere-leeftijd/
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