A Mayo Clinic study of vaping-related lung injuries finds that “toxic chemical fumes,” not oils, may be to blame for the illnesses. Dr. Brandon Larsen:

“What we see with these vaping cases is a severe chemical injury that I’ve never seen before in a tobacco smoker or a traditional marijuana smoker.”

The findings were based on the biopsies of 17 people with confirmed cases or possible cases of vaping-related lung injuries, including two patients who died. Here in Minnesota, there have been 59 confirmed cases reported and 32 are under review. One person has died.