Researchers have found that daily drinking and smoking may be linked to modest increases in relative brain age compared to those who drink and smoke less. The study, published in the journal Scientific Reports, showed that certain lifestyle habits, such as heavy smoking and alcohol consumption, are associated with adverse effects in specific brain regions.
"Our analyses of alcohol intake frequency and relative brain age indicated that subjects who drank daily or almost daily had a significantly higher relative brain age compared to those who drank less frequently," said study researchers from university of Southern california in the US.
In 11,600 individuals for whom information on drinking behavior was collected, those who drank alcohol on most days had a higher relative brain age than those who drank less frequently or not at all. According to the researchers, each additional gram of alcohol consumption per day was associated with 0.02 years of increased relative brain age.