Electronic Cigarette Use and Myocardial Infarction.

Area of Science:

• Cardiovascular Disease Epidemiology
• Tobacco and Nicotine Research
• Public Health

Background:

• Existing research links electronic cigarette (e-cigarette) use to myocardial infarction but often in populations with prior cigarette smoking history.
• A significant knowledge gap exists regarding the cardiovascular risks of e-cigarette use among individuals who have never smoked traditional cigarettes.

Purpose of the Study:

• To investigate the association between current e-cigarette use and the occurrence of myocardial infarction in a cohort of never-smokers.
• To determine if e-cigarette use poses an independent risk for heart attack in individuals without a history of cigarette smoking.

Main Methods:

• Utilized data from the National Health Interview Survey (NHIS) spanning 2014-2021.
• Employed logistic regression analysis to assess the relationship between e-cigarette use and myocardial infarction, adjusting for key cardiovascular risk factors (age, sex, diabetes, hypertension, hypercholesterolemia, obesity/overweight).

Main Results:

• The study included 139,697 never-smokers and 1,237 current e-cigarette users.
• Current e-cigarette users exhibited a 2.6-fold increased odds of myocardial infarction (OR 2.62, 95% CI 1.44-4.77) compared to never-smokers, even after adjusting for confounding factors.
• E-cigarette users were generally younger and less likely to have comorbidities like diabetes, hypertension, or hypercholesterolemia compared to non-users.

Conclusions:

• Current e-cigarette use is associated with a significantly elevated risk of myocardial infarction among individuals who have never smoked cigarettes.
• The findings suggest that e-cigarettes may contribute to cardiovascular disease independently of traditional smoking.
• Further longitudinal research is warranted to confirm these associations and elucidate the underlying mechanisms.