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Another study linking vaping to heart attacks has been retracted

There was no evidence of an increased risk of heart attack in vapers who had never smoked.

Titled “Re-examining the association between e-cigarette use and myocardial infarction: A cautionary note,” the current study refuted three previous studies that had broadly linked vaping to an increased risk of heart attack. , even in non-smokers. “Among non-smokers, e-cigarette use is not associated with an increased risk of having a heart attack,” Siegel said, as cited by Filter.

One of the flawed studies, titled “E-Cigarette Use and Myocardial Infarction in Adults in the US Population Assessment of Smoking and Health,” was published in the Journal of the American Heart Association in 2019 and co-written by the infamous Stanton Glantz. The cross-sectional study used baseline survey data from the 2013-2014 PATH (Population Assessment of Tobacco and Health) Study, looking for a relationship between vaping and heart attacks.

The study authors found that people who vaped were more likely to report having had a heart attack in the past, and later concluded that e-cig use doubles the risk of having a heart attack. a heart attack.

It’s actually heart attacks that “cause” vaping

Responding to claims on his blog page, “The Rest of the Story,” at the time, Siegel pointed out “that the problem with drawing a causal conclusion from this cross-sectional study is that there is no no way of knowing which came first: vaping or heart attack.As pointed out in response to similar studies, Siegel pointed out that it is quite common for ex-smokers to switch to vaping after suffering heart attacks and other health problems.

“If that’s the case, then it’s not vaping that’s causing the heart attacks; instead, it’s really heart attacks that “cause” vaping. In epidemiology, we call this ‘reverse causation’, and it’s a common limitation of cross-sectional studies, especially when they don’t ask about the time course of exposures and outcomes,” he explained. .

Sure enough, after multiple submissions by other academics, the review pointed out that the study did not specify which came first, vaping or heart attacks. When asked to provide additional data to determine the direction of this relationship, Glantz and his team did not, leading to the retraction of the study.

Only vapers who also smoked had an increased risk of heart attack

Meanwhile, the new study by Siegel and his team collected data from 175,546 respondents to the annual National Health Survey from 2014 to 2019. They found that daily e-cigarette use does not was associated only with a higher incidence of heart attack in people who were also currently. smoke regular cigarettes.

Additionally, they found no evidence of an increased risk of heart attack in vapers who had never smoked. These findings confirm Siegel’s earlier suspicions that the original study had drawn its conclusions on a perceived relationship between vaping and smoking without accounting for smoking, which in this case is undoubtedly a highly significant variable.

Review of effects of vaping on cardiopulmonary health leads to inaccurate conclusions