Lead, arsenic, nickel, cobalt... Toxic compounds and heavy metals in electronic cigarettes: 60 million consumers alert The consumer protection magazine tested six e-cigarettes. He notes "the migration of metals" in the puffs sucked in by users, according to the survey published in this January's issue. Heavy metals in the puffs inhaled by users: this is the conclusion of a study by the magazine 60 million consumers, which looks at the composition of the liquid used in electronic cigarettes, and what happens when it is transformed into vapour. The results are published in the January issue. To achieve these results, the magazine tested six e-cigarettes. "Before analysing the puffs, we looked ... [Read more]