The effects of aging on cognitive decline have long been a topic of research. A recent study published in Nature Communications found that smoking is the most significant lifestyle factor affecting cognitive skills in older adults.
Researchers at University College London analyzed data from 32,000 European adults aged 50 and above, with no signs of dementia at the start of the study. The team examined how different lifestyle habits, such as exercise, social contact, and moderate drinking, impacted brain function over a period of 15 years.
The results showed that smoking was associated with a significant decline in cognitive skills, particularly memory and verbal fluency, compared to non-smokers. In fact, smokers experienced a 85% greater drop in test scores over the decade compared to their non-smoking counterparts.
While other healthy habits, such as exercise, social engagement, and moderate drinking, can contribute to slower cognitive decline, they were found to have less of an impact when smoking was present. The study suggests that quitting smoking may be one of the most effective ways to slow down cognitive aging.
The researchers used a unique approach by isolating individual lifestyle habits and analyzing their effect on brain function separately. This allowed them to identify smoking as the most significant factor contributing to cognitive decline.
While there is no conclusive evidence of cause-and-effect, the study highlights the importance of quitting smoking for maintaining cognitive function. The findings have significant implications for public health policy and the development of cessation services.
By making small changes to their lifestyle habits, adults can take steps to slow down cognitive aging and reduce the risk of dementia. Quitting smoking, staying active, engaging in social activities, and enjoying moderate amounts of alcohol may be key strategies for maintaining brain health.
Source: https://www.earth.com/news/doctors-say-this-lifestyle-factor-smoking-is-biggest-contributor-to-cognitive-decline