Vaping has risks, regardless of what you vape. Starting to use e-cigarettes or switching from cigarettes to e-cigarettes increases the risk of suffering devastating health effects. The safest option, according to the American Cancer Society, is to completely avoid vaping and smoking. A recent Yale University study identified chemicals called acetals in some Juul e-cigarette liquids.
According to the researchers, these chemicals can be especially irritating to the lungs and cause damage when inhaled.