Health officials have reported six deaths and at least 450 cases of lung injury connected to vaping. Patients with vaping-associated lung injury display a wide array of respiratory symptoms, including coughing and chest pain. Doctors still don’t know what’s behind the surge in vaping-related lung injuries. They suspect it’s not nicotine or THC, but other chemicals like vitamin E acetate that might be present in the vape device. People who vape are exposed to other serious health risks, beyond lung injury, doctors say. For example, nicotine, which can be present in high concentrations in e-cigarettes, is linked to brain development