I'm starting to get tired from this... i regret smoking hookah between ages 16-18 and think that stopped my growth, my brother's too, help me please!

Height issue: You are concerned about your height, but it is more than likely that you have reached your adult height by now. It is unlikely that you have a reversible issue that will make you taller if fixed. Have you seen a doctor?

28 - Won't grow more: A Université de Montréal study of 1,293 teens over a 5 yr period. funded by Canadian Cancer Society indicated “a boy who smokes 10 cigarettes a day from age 12 to 17 will be about an inch shorter than a boy who does not smoke at all.” https://www.sciencedaily.com/releases/2008/03/080331135155.htm. I was unable to find the actual study to review it. I haven’t seen this reported elsewhere.