Elevated Levels of Blood Neurofilament Light Chain in Substance-Using Populations: A Systematic Review and Meta-Analysis.
Substance-use disorders are increasingly linked to structural and functional brain alterations consistent with neuroaxonal injury. Neurofilament light chain (NfL) is a sensitive blood-based marker of axonal damage, but evidence in substance-using populations remains fragmented. We systematically reviewed and meta-analy...