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AI simulation of flavored vape reactions reveals formation of many hazardous chemicals

Research warns of hazardous health risks from flavored vapes
Chemistry diversity analysis of 180 flavor chemicals and their predicted pyrolysis products. (A) 3D representation of the chemical space occupied by 180 e-liquid compounds (red circles) and their discrete 4524 NN predicted pyrolysis products (gray circles). Principal component (PC) scale refers to normalized projections of the six molecular properties. (B) Molecular weight distribution of 180 e-liquid compounds (red distribution profile) and their discrete 4524 NN predicted pyrolysis products (gray distribution profile). Credit: Scientific Reports (2024). DOI: 10.1038/s41598-024-59619-x

New research has uncovered the potentially harmful substances that are produced when e-liquids in vaping devices are heated for inhalation. The study, published in Scientific Reports, highlights the urgent need for public health policies concerning flavored vapes.

The research team at RCSI University of Medicine and Health Sciences, Dublin, used (AI) to simulate the effects of heating e-liquid flavor chemicals found in nicotine vapes. They included all 180 known e-liquid flavor chemicals, predicting the new compounds formed when these substances are heated within a vaping device immediately prior to inhalation.

The analysis revealed the formation of many hazardous chemicals including 127 which are classified as "Acute Toxic," 153 as "Health Hazards" and 225 as "Irritants." Notably, these included a group of chemicals called volatile carbonyls (VCs) which are known to pose health risks. Sources for VCs were predicted to be the most popular fruit, candy and dessert-flavored products.

Lead author, Professor Donal O'Shea, Professor of Chemistry and Head of Department, said the findings are very concerning. "We wanted to understand, before it's too late, the likely impact flavored vapes are having on the health of the 4.5 million vapers in the U.K. Our findings indicate a significantly different profile of chemical hazards compared to what we are familiar with from traditional tobacco smoking."

"It is plausible that we are on the cusp of a new wave of chronic diseases that will emerge 15 to 20 years from now due to these exposures. We hope this research will help people make more informed choices and contribute to the conversation on the potential long-term health risks and the regulation of vaping, which this research suggests should be comprehensive."

The study also highlighted the complexities introduced by the huge array of flavors available in vaping products, which include 180 different chemicals blended in various amounts. This cocktail of chemicals, primarily derived from the where they have a good safety record for specific uses, were never intended to be heated to high temperatures for inhalation.

As vaping devices vary widely and are often user-customized, the temperature control and resulting can differ, increasing the unpredictability of potential health risks. This requires further research using the AI framework established in this study, which could also lead to the development of risk reports for individual flavors, providing an informative public health policy resource.

Considering the popularity of flavored vapes among non-smoking teenagers and , understanding the long-term effects of these products on public health, morbidity and mortality is crucial. This study demonstrates that without comprehensive regulation, as we try to treat the nicotine addictions of older tobacco smokers, there is a substantial risk of transferring new health issues to younger generations.

More information: Akihiro Kishimoto et al, Forecasting vaping health risks through neural network model prediction of flavour pyrolysis reactions, Scientific Reports (2024). DOI: 10.1038/s41598-024-59619-x

Journal information: Scientific Reports

Provided by RCSI University of Medicine and Health Sciences

Citation: AI simulation of flavored vape reactions reveals formation of many hazardous chemicals (2024, May 8) retrieved 24 June 2024 from
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