Recently, a report titled "E-cigarette smoking may cause osteoporosis" has attracted widespread attention. However, the reporter noticed that this study from the United States has been rejected by the American Council on Science and Health (ACSH): "The study is confusing, and any conclusions drawn from it are wrong. of."

"Can electronic cigarettes cause bone damage? Yes or No, A Confusing Study, published on ACSH official website

It turns out that all the problems lie in the definition. The study defines an e-cigarette user as "using an e-cigarette at least once in the past 30 days." In other words, whether it is a heavy user who uses e-cigarettes every day, or a person who has tried an e-cigarette only once in 30 days and has never used an e-cigarette again, they are called e-cigarette users. Does this include "e-cigarette users" who smoked cigarettes for the first 29 days and only started using e-cigarettes on the last day? Should they blame cigarettes or e-cigarettes for fractures?

"The definition as a research premise is not valid, and the conclusion is naturally meaningless." Cameron English, head of the life sciences section of ACSH and author of the article, said sharply.

Let's look at the specific research content. The study, published in the American Journal of Open Medicine, stated that a survey of more than 5,500 adult e-cigarette users found that the use of e-cigarettes is associated with a high prevalence of fragility fractures. The conclusion seems horrible, but the logic is full of loopholes: the prevalence of fragility fractures among e-cigarette users is higher = e-cigarette users are more likely to fracture = e-cigarette users are osteoporotic = e-cigarette users cause osteoporosis-a typical landslide error.

Is the high prevalence of fractures because users are engaged in dangerous work? In addition to using electronic cigarettes, do fracture patients have other habits in common? Does the user have a history of fracture before using the e-cigarette? Every equal sign in the research logic can be marked with a question mark.

What's more deadly is that some of the conclusions of the study contradict the authoritative scientific conclusions that have been confirmed internationally.

Cameron English said that he noticed this study because the study stated that "the prevalence of dual users of cigarettes and e-cigarettes is higher than that of smokers." As early as 2015, the Department of Public Health of the United Kingdom confirmed that e-cigarettes can reduce the harm of cigarettes by 95%. How can the prevalence rate be higher if users abandon the more harmful cigarettes?

He went to study the study and found that the study was completely contradictory. The data shows that the prevalence of fragility fractures among pre-e-cigarette users is higher than that of current users. According to the research conclusion (e-cigarettes are the causative factor), it should be less prone to fractures to stop using e-cigarettes.

Research data shows that the prevalence of former users who stopped using e-cigarettes (Former users) is higher than that of current e-cigarette users (Current users)

In fact, the study author has already stated the limitations of the conclusion, including not distinguishing the e-cigarette brand used by the surveyed object, the time of use, and a more specific comparative analysis. However, both domestic and foreign media only focus on disseminating the sensational conclusion that "electronic cigarettes cause osteoporosis".

"The researcher once stated that'our findings are convincing for the potential impact on public health.' IMHO, any conclusions drawn from this study are wrong. Even the use of e-cigarettes can cause osteoporosis. , We also need to prove through more scientific research. If this situation exists." Cameron English said.

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