i gave up smoking ten or more years ago now and am still chewing the gum. i have tried ordinary gum but because i have veneers and false teeth i can't use the ordinary gum. i just keep chewing and think at least it is not going into my lungs. people have remarked, but i think so what. at least i'm not smoking and being unsociable. so far i have noticed no side effects, and yes i admit i am addicted. there are worse things out there. they have anti smoking clinics, someone shouls set up a clinic for the gum chewers.