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It's not enough that e-cigarettes have been blowing up in people's faces or may give you something called "popcorn lung"—now the glowing nicotine dispensers could be giving you cancer, too.The Washington Post points to a new study from the Lawrence Berkeley National Laboratory presenting evidence that the vapor from e-cigs contains two chemicals—specifically, propylene glycol and glycerin—considered "probable carcinogens" by federal health officials.This isn't the first time health advocates have highlighted the toxicity of e-cigarettes. Way, way back in 2009—before the word "vape" even entered our general lexicon—the FDA warned that certain e-cigs emit a chemical typically found in antifreeze, and last year a New England Journal of Medicine study pointed out that they also give off formaldehyde, too. Good shit.Perhaps it's best to take the words of this latest study's author, Berkeley Lab researcher Hugo Destaillats, as pure gospel: "Regular cigarettes are super unhealthy. E-cigarettes are just unhealthy."Follow Larry Fitzmaurice on Twitter.Read: Some Guy Stole a Human Brain and Used the Fluid to Get High