Risk of heart attacks is double in daily users
Daily e-cigarette use is associated with increased odds of MI independent of and in addition to the risks associated with smoking and other risk factors. Dual use of e-cigarettes and conventional cigarettes—the most common use pattern among e-cigarette users—is more dangerous than using either product alone. From these findings, recreational use of e-cigarettes or use of e-cigarettes for smoking cessation should not be recommended.
Study in American Journal of Preventive Medicine