are minors allowed to smoke cigarettes is it illegal for a minor U.S. new law says “NO” to underage smokers – The Scarlet Scroll Legal smoking age - Wikipedia

As we observed for overall consumption, manufactured cigarette consumption was significantly higher among smokers who vaped than those who did not vape at the start of the study but significantly lower in the former versus the latter group by the end

These mass concentrations agree with total particulate matter (TPM) measurements of fresh smoke collected on a filter directly downstream of the cigarette or joint (without dilution or aging due to sampling), which show smoking a marijuana joint produces roughly 3.4 (0.6) times more TPM than a tobacco cigarette following the same HCI routine with six puffs

Association of metals (cd, Fe, as, Ni, Cu, Zn and Mn) with cigarette butts in northern part of the Persian Gulf

Nicotine alone is toxic and can be lethal