On Health E cigarettes affect lung biology, even in those who've never smoked We break down the key differences between traditional cigarettes and e cigarettescovering: 1 Their compositions and ingredients. 2 The health risks associated with both. 3 Nicotine levels and addiction potential. 4 The impact Vape Juice Ingredients: What's Inside Your E Liquid? VITAE Glass Predicting the pulmonary effects of long term e cigarette use: are the clouds clearing? European Respiratory Society E cigarette vapour contains two cancer causing chemicals, study says E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all