A comprehensive new study published in Neurology demonstrates that quitting smoking substantially reduces dementia risk, with former smokers showing a 20% lower likelihood of cognitive decline compared to current smokers. The research, which followed participants over an average of 8.5 years, reveals that the cognitive benefits of cessation emerge remarkably quickly—within just two years of quitting. This finding offers encouraging news for older adults concerned about late-life smoking cessation effectiveness.
The study identifies weight management as a critical factor in maximizing protection, with those maintaining minimal weight gain after quitting experiencing the strongest cognitive benefits. Dr. Sarah Chen, lead investigator at Johns Hopkins, emphasizes that smoking cessation reduces neuroinflammation and improves cerebral blood flow—two key mechanisms in dementia prevention. These findings underscore smoking cessation as a modifiable risk factor with profound implications for neurological health and longevity.
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