I am convinced now at the age of 35 ( I quit smoking 6 years ago) that my smoking cigarettes and marijuana at early ages, approximately 14.5 - 15 years old when I began lightly, to the gradual heavier use, stunted my size growth. at my largest, I was just about 7.25 x 6...that was when I was about 18-22 years old...but is it possible/probably that my smoking cigarettes and marijuana affected growth in either a minor (or major) way? has anyone seen any scientific data on the topic? They say that smoking and coffee (which I never drank) stunts height, is it known to effect penile development? it seems logical to me that it very well might...if that is the case, thanks alot Marlboro, you owe me an extra inch in length and girth!!!! bastards does anyone know or have an opinion?