Vaping has become a popular alternative to smoking. However, there are many potential risks associated with cannabis vape liquids
The study conducted by researchers from Health Canada and the National Research Council of Canada looks into the composition of cannabis vape liquids, emphasising the presence of nano-sized toxic metal particles even before the vaping device is heated.
These findings have raised many concerns about these products.
Harmful effects of vaping
Unlike traditional smoking methods, vaping does not involve combustion, reducing exposure to harmful byproducts. The study found that the metal components used to heat vape liquid may release hazardous elemental metals such as nickel, chromium, and lead, which can find their way into the aerosol and into the user’s body.
Lead emerged as a particularly concerning metal, with unregulated samples containing levels exceeding the generally accepted tolerance limit by 100 times.
What’s more alarming is that this contamination was detected in unused vape liquids, suggesting that it originates from the production process rather than the heating of the coils.
Nano-sized metal particles
Dr. Zuzana Gajdosechova, a scientist involved in the study, emphasised the potential health risks associated with nano-sized metal particles, which can be highly reactive and harmful when inhaled. The variability in metal contamination levels between samples further highlights the need for testing procedures and regulations in the cannabis industry.
Moving forward, researchers aim to investigate the transmission of these metal particles into the vape aerosol during use, as this is where the greatest risk to users’ health lies.
While previous studies have demonstrated similar risks with nicotine vapes, this study highlights the need for further research into the specific dangers presented by cannabis vaping.
“The evidence strongly suggests that metal contamination can come from the device when it’s produced, and not from the heating of the coils,” explains Gajdosechova. “But depending on the quality of the device, the contamination may be increased by that heating.”
Conclusion
While vaping may offer an alternative to smoking, the study serves as a reminder that not all methods of consumption are hazard free.
Consumers are advised to take caution when purchasing cannabis vape products, opting for regulated sources whenever possible.
Using advanced analytical techniques, researchers demonstrated the presence of metal particles in vape liquids before use, challenging previous assumptions about their origin.
The comparison of metal concentrations in legal products revealed alarming levels of toxic metals such as lead, nickel, and copper, far exceeding established tolerance limits.
The significant variability observed among replicate subsamples highlights the complexity of the sample matrix and stresses the challenges associated with ensuring consistent quality control.
Moving forward, regulatory frameworks must evolve to address these findings and prioritise the safety of consumers in the burgeoning cannabis vaping market.
