The completion of longitudinal growth of human vertebral bodies, called epiphyseal closure, usually occurs
between the ages of 18 and 25 years,
Literally the first thing you when you google it
Growth plates at each end of vertebral bodies play a pivotal role in longitudinal spinal growth. Epiphyseal closures are formed in adult humans. Although monkeys are frequently employed in bone and disc research, the age of epiphyseal closure has ...
www.ncbi.nlm.nih.gov
And? Everyone should at least try to change something before they accept it, crying and saying "it'll never work out anyways" is loser mentality. I believe in op