Vaping linked to mental fog: Studies By IANS | Published on Tue, Dec 29 2020 13:03 IST | 0 Views 5 Dangers of Smoking while Pregnant.. Image Source: IANS News New York, Dec 29 : There appears to be a clear link between e-cigarette use and mental fog as two new studies have found that those who vape were more likely to report difficulty concentrating, remembering, or making decisions than their non-vaping, non-smoking peers. It also appeared that kids were more likely to experience mental fog if they started vaping before the age of 14. "Our studies add to growing evidence that vaping should not be considered a safe alternative to tobacco smoking," said study author Dongmei Li, Associate Professor at University of Rochester Medical Centre (URMC) in New York.