For example, smoking marijuana, though it doesn't have the negative chemicals of cigarettes, can still cause negative health consequences long term because you are inhaling burnt matter into your lungs.
For example? Which clinical studies are you citing? Oh, there aren't any since herb is illegal.
Well actually that's not true, there's been multiple clinical studies, and there's been small continuous studies that government has actively allowed for years. But yes, because it is (for the most part) illegal, it's been way understudied, and there's a huge amount of conflicting results that have come out of them due to that. And when I say health consequences I'm referring to more minor things like bronchial/throat irritation, not cancer. In other words, at least in that case, effects that would be negated if consumed differently, not by burning. But anyways I won't hijack this into a thread about pot, my point is not about marijuana, but that repeated heavy inhalation of any smoke is generally not going to be good for you, at least in the short term.