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Research has uncovered that individuals who quit tobacco use during middle age can reduce their mental deterioration so significantly that within a decade, their likelihood of experiencing cognitive impairment becomes comparable to someone who has never smoked.

Substantial Improvements in Cognitive Function

Based on a study involving over nine thousand participants from several countries, quitting smoking reduces by half the speed of deterioration in verbal fluency and decelerates memory loss by 20%.

The results strengthen a growing body of research that quitting smoking can delay the pace of cognitive decline associated with aging and thus help prevent the onset of dementia.

“Our study indicates that stopping smoking may help people to maintain better brain function over the long term even when we are in our middle age or beyond,” stated the principal investigator.

Sustained Cognitive Benefits

Scientists compared the mental performance of adults aged at least 40 who had quit smoking with those who kept the habit. At the start, both cohorts had similar performance, but over the following half-decade, former smokers gained substantial improvements in mental abilities.

Participants who stopped smoking had more favourable mental trajectories following smoking cessation than continuing smokers,” the study reports. “The speed of mental deterioration was slower for smokers who quit than for continuing smokers in the period following quitting.”

Importance of Quitting Even Older Age

While the results do not establish cause and effect, they could offer strong encouragement for older smokers – who are less inclined to try to give up – to quit.

Smoking is among the fourteen contributors for cognitive decline recognized by specialists. There is increasing proof that addressing these factors, which encompass depression, heavy drinking, hearing loss, and high cholesterol, can reduce the risk of cognitive impairment.

“The findings strengthen current proof that changing to a better habits can have a noticeable effect on your brain health,” stated a research expert. “We know that stopping tobacco, staying physically active, consuming a healthy balanced diet, and drinking less alcohol can all help minimize the danger of dementia.”

The Way Smoking Affects Brain Health

Tobacco use is believed to play a role in neurodegeneration by harming cardiovascular health, impacting blood vessels that deliver nutrients to the brain, and causing chronic inflammation and directly harming neurons through cellular damage.

Cautions and Background

However, researchers warned that the greater cognitive decline seen in smokers doesn’t mean that these people will necessarily go on to develop cognitive disorders. Variations in socioeconomic background or drinking habits may have influenced the results.

“We’ve known for a while that smoking raises the likelihood of cognitive decline and mental deterioration, but this important proof demonstrates that the harms can be slowed by quitting,” stated a public health expert.

Recent data indicate that over a third of tobacco users tried to quit in the past month, with 29% of them achieving success – almost double the percentage recorded when monitoring began.