The human brain goes through five phases, with adolescence lasting until age 32: study CTV NewsTopological turning points across the human lifespan NatureBrain has five ‘eras’, scientists say – with adult mode not starting until early 30s The GuardianAdolescence lasts into 30s – new study shows four pivotal ages for your brain BBCHuman brains have 5 distinct ‘epochs’ in a lifetime, study finds NBC News