Yeah, it was the vitamins that did it, not the discipline.
These are adolescents who not only come from fatherless homes, but homes where there is no discipline and probably no one who has completed their secondary education.
Fundamentals such as basic nutrition and normative social behavior are foreign to them.
Dalrymple has written some brilliant essays exploring how terrible cultural ideas have filtered down through the ruling class and devastated heretofore working class communities.