The combination of propylene glycol and vegetable glycerin e cigarette aerosols induces airway inflammation and mucus hyperconcentration Scientific Reports It's important to acknowledge that more research needs to be done to allow dermatologists to fully understand the short and long term impacts of vaping on our skin. However, we do know that Cigarettes or vapes, pick your poison Fred Hutch E cigarettes potentially harmful: PET imaging shows greater lung inflammation in e cigarette users than cigarette smokers EurekAlert! How does e cigarette vapor alter the gut microbiome, body weight, and systemic inflammation levels?