A Pennsylvania teenager is in a medically induced coma for a severe lung illness caused by his vaping habit, reports The New York Post.

Kevin Boclair, 19, is connected to a heart/lung machine at the Hospital of the University of Pennsylvania where doctors said he may need a double lung transplant, his parents told local TV stations.

Health officials have warned against using e-cigarettes and other vaping products, which they’ve linked to a rise of breathing illnesses.

In July, eight teens with a history of vaping were hospitalized with “seriously damaged lung” at The Children’s Hospital of Wisconsin.