Smoking is interesting. Most of the direct harm from smoking comes from the radioactive lead and polonium that the tobacco absorbs from the soil.
Not that other parts of inhaling burning hot smoke aren’t damaging, but the worst of it are those radioisotopes.
I don’t know how much of that shit is deposited vs exhaled, and would need to see studies on it. But there’s a laundry list of other harmful shit in cigarette smoke.
Smoking is interesting. Most of the direct harm from smoking comes from the radioactive lead and polonium that the tobacco absorbs from the soil.
Not that other parts of inhaling burning hot smoke aren’t damaging, but the worst of it are those radioisotopes.
I don’t know how much of that shit is deposited vs exhaled, and would need to see studies on it. But there’s a laundry list of other harmful shit in cigarette smoke.