This is great news, but is this new? I feel like I've heard my entire life that smoking is not reversible and that if you start, it will cut 5 years off your life.
My father smoked a ton growing up, so I never had any interest starting. I was one of the few people in my friends group who didn't. Thankfully, my father and most of those friends stopped probably 10+ years ago, so this chart is helpful.