An illegal type of disposable e-cigarettes, commonly referred to as vapes, may carry more risks than traditional cigarettes. This conclusion comes from research conducted at the University of California, Davis, revealing several concerning findings.
Published in the Journal ACS Central Science, the study discovered alarming levels of toxic heavy metals in illegal vaping products, which significantly raise cancer risks. Researchers analyzed puffs from three popular vape brands, all of which are sold by retailers but not sanctioned by the FDA.
Among the findings, three heavy metals—lead, nickel, and antimony—were present in all tested devices, regardless of flavor intensity. These metals are known carcinogens and can contribute to various cancers, including skin, lung, and kidney cancer, as noted by the National Institutes of Health.
Notably, all vapors exceeded the cancer risk thresholds for nickel, which is linked to conditions like cardiovascular disease, asthma, and respiratory tract cancer. Brett Poulin, a senior research author at UC Davis, expressed disbelief over the high levels of toxic metals found. He mentioned that upon examining the initial sample, he was convinced the testing equipment was malfunctioning due to unexpectedly high lead concentrations.
One brand, interestingly, was found to expose users to lead levels equivalent to smoking 19 packs of cigarettes. The study indicated that most disposable e-cigarettes contained higher metal levels compared to older refillable devices.
Poulin opened a device and found components made from lead copper alloys. He explained that even when the device isn’t in use, lead can leach into the e-liquid, raising health concerns. He remarked on the uncertainty regarding whether this situation stemmed from design choices, cost-cutting, or oversight during manufacturing.
According to Poulin, no safe level of lead exposure exists, emphasizing that it poses significant health risks, especially for vulnerable groups like children and adolescents. Daniel Sterman, MD, a lung cancer specialist, noted that the study highlights elevated metal concentrations. He pointed out various health risks from vaping, including potential links to lung diseases and cancer, although establishing a direct connection can be challenging.
Regulations are a hot topic, as Sterman suggests that disposable e-cigarettes should be strictly regulated and restricted to those over 21. He also stressed the importance of clearly stating health risks on product packaging, especially for younger audiences.
Study Limitations
However, one limitation of this research is that only a handful of disposable vape brands were analyzed, even though hundreds are available on the market. The study identified variability in metal leaching among the brands tested.
Poulin raised concerns about the overall lack of knowledge regarding the metal content in most disposable e-cigarettes. This gap in understanding is critical, considering these devices’ growing popularity.
Elf Bar, a Chinese vape brand, countered the study’s findings, asserting they had ceased shipping products to the U.S. in May 2023 due to ongoing trademark litigation. They argued that the devices tested might not be authentic, attributing a surge in counterfeiting to their absence from the market.
The CDC reports a rise in e-cigarette use among adults, growing from 4.5% in 2019 to 6.5% in 2023, with young adults aged 21 to 24 showing a significant usage rate. This trend indicates a rising public health concern that could potentially worsen if not adequately addressed.
