Interpretation, Strengths, and Limitations This nationwide study demonstrates that starting smoking at a younger age substantially increases the risk of MI and stroke after statistical adjustment for cumulative smoking exposure, and that early initiation intensifies the cardiovascular harm associated with heavier smoking
This combination of factors due to nicotine means that even more stomach acid can slosh around and potentially back up into the esophagus
The tobacco industry has also made deliberate efforts to create designs that attract young smokers [10, 12], and it has been shown that cigarette brand imagery and symbolic properties used to create social personas to communicate to peers are particularly valued by adolescents [18, 19]
E-cigarettes dont help smokers quit, study finds
Statistical modeling Economic models were adopted from similar previously published studies 1,22