2. Neurofilament Light Chain (NfL)
Neurofilament light chain (NfL) is another key biomarker identified in the study. This protein, released into the bloodstream during nerve cell injury, serves as a reliable indicator of neurodegeneration. Elevated NfL levels are closely linked to Alzheimer’s progression, and recent findings suggest it can help distinguish Alzheimer’s from other forms of dementia. For further reading, see The Lancet Neurology.