Vaping, Smoking, and Your Vision: What You Need to Know Cascadia Eye Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Psychiatry.org E Cigarettes and Vaping What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Psychiatry.org E Cigarettes and Vaping Vaping can have serious negative impacts on both your lungs and your overall health. Here are the potential risks that we already know about, even if the vape is nicotine free: