New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking STUDIES LINK FLAVORED E CIGARETTES TO LUNG DAMAGE, Health researchers have found that certain flavored e cigarette products may cause cellular damage in lung tissue., Studies conducted by institutions Secondhand vape smoke may damage lung tissue AirQualityNews Vaping It's No Smoke and Mirrors When it Comes to Urinary Health Issues The Urology Group Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub Can Smoking and Vaping Cause Back Pain? National Spine Health Foundation