Toxic metal particles can be present in cannabis vapes even before the first use

Vapes have often been heralded as a “safer” way to consume either nicotine or cannabis, where legal to do so. But the devices present their own suite of risks that are slowly being revealed as they undergo increasing research and regulation. Now, researchers have discovered that nano-sized toxic metal particles may be present in cannabis vaping liquids even before the vaping device is heated…
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