The combination of propylene glycol and vegetable glycerin e cigarette aerosols induces airway inflammation and mucus hyperconcentration Scientific Reports The Hidden Dangers: E Cigarettes, Heated Tobacco, and Their Impact on Oxidative Stress and AtherosclerosisA Systematic Review and Narrative Synthesis of the Evidence How does e cigarette vapor alter the gut microbiome, body weight, and systemic inflammation levels? E cigarettes potentially harmful: PET imaging shows greater lung inflammation in e cigarette users than cigarette smokers EurekAlert!