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Smoking enhances age related brain atrophy--a quantitative study with computed tomography
A Hayee1, A Haque, A K M Anwarullah
1Dept. of Neurology, SSMC, Dhaka.
Bangladesh Medical Research Council Bulletin
|April 1, 2004
Summary
Chronic smoking significantly accelerates brain atrophy in adults over 50. This study found increased brain atrophy index (BAI) in smokers, suggesting smoking exacerbates age-related brain changes.
Area of Science:
- Neurology
- Radiology
- Public Health
Background:
- Chronic smoking is a global health concern.
- Age-related brain atrophy is a known phenomenon.
- The impact of smoking on brain structure requires further quantitative investigation.
Purpose of the Study:
- To quantitatively assess the chronic effects of smoking on brain atrophy.
- To compare brain atrophy index (BAI) between smokers and non-smokers in different age groups.
- To explore the relationship between smoking, brain atrophy, and atherosclerosis.
Main Methods:
- Prospective study conducted from January 1999 to December 2002 in Bangladesh.
- Involved 219 male smokers and 219 non-smokers aged 40-70 years.
- Quantitative analysis of brain atrophy using Computed Tomography (CT) scans and calculation of Brain Atrophy Index (BAI).
Main Results:
- Smokers exhibited a significant increase in BAI compared to non-smokers in age groups 50-54, 55-59, 60-64, and 65-70 years (p<0.01 and p<0.05).
- No neurological or focal brain abnormalities were present in the study participants.
- BAI served as a reliable quantitative marker for brain atrophy.
Conclusions:
- Chronic smoking accelerates age-related brain atrophy.
- Advanced atherosclerosis may be a mechanism linking smoking to increased brain atrophy.
- Findings highlight the detrimental neurological effects of long-term smoking.