Besides other negative health aspects, does smoking/vaping thc or any other substance actually stunt height growth?

There has not been a proper study in which say 1000 peopler were randomly assigned to 1/2 got to smoke and 1/2 did not smoke as they were growing up and height was carefully measured every 6 months and the all ate the same and exercised the same as they grew. So we do not know and probably never will know the answer to this question. Sorry

Tobacco and weed will stunt the growth of your brain which is more important than stunting your physical growth. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, no tobacco alcohol weed or street drugs. Get HPV and Covid vaccines. Wish you good health!