The list of dangerous toxins in vaping smoke continues to grow, according to a troubling new study, which found that some e-cigarette users risk inhaling a chemistry lab’s worth of heavy metals — with links to cancer, lung disease, and gastrointestinal disorders.

Researchers from the University of California, Riverside found eleven heavy metals in the vapors produced by six popular, tank-style e-cigarettes, Forbes reported.

They are aluminum, calcium, chromium, copper, iron, lead, magnesium, nickel, silicon, tin and zinc, the study in the journal Scientific Reports found.

“The more metal parts in the e-cigarette, the more heavy metals were found in the vapors it produced,” the study determined.

The metals appear to be generated from the metal components in the devices, including the nichrome wire, tin solder joints, brass clamps, insulating sheaths and wicks, according to study author Monique Williams.

The study had support from the Food and Drug Administration Center for Tobacco Products and the National Institute of Drug Abuse.

The bad news is the latest revelation of the dangers of vaping. On Friday, a cannabis testing facility in California found bootleg marijuana vaping cartridges containing hydrogen cyanide.