 [ Symptoms ] how many cigarettes can safely be smoked a day  my 18 year old son thinks if he only smokes a few times a week there are will b no negative effects on his health and can not become addicted true or false [ Disease ] none how many bullets does it take to kill someone how much poison can you ingest and still live any person regardless of age who smokes even one cigarette is a fool addiction is unlikely to occur with that few cigarettes but addiction is not the issue it is health have him take a big inhalation on a cigarette and then blow it through several folded layers of white tissue that black stuff you see is only a fracture of what sticks to the lining of the lungs and that black stuff is loaded with cancer causing chemicals so how many cigarettes can one smoke over a lifetime before that get lung throat or mouth cancer i do not know but only a fool would take the chance to find out