Systems and methods for detecting a cognitive diseases and/or impairments in humans are disclosed. The method may include providing a saliva sample from a human subject, and subjecting at least a portion of the saliva sample to a spectroscopic analysis to produce a sample spectroscopic signature. The method may also include analyzing the produced sample spectroscopic signature using a predetermined statistical model. The predetermined statistical model may be based on spectroscopic signatures for a plurality modeling samples, and the spectroscopic signatures for each of the plurality of modeling samples may be associated with one of a plurality of predetermined cognitive categories. Additionally, the method may include correlating the produced sample spectroscopic signature with one of the plurality of predetermined cognitive categories based on the spectroscopic signatures for each of the plurality of modeling samples of the predetermined statistical model.
SYSTEMS AND METHODS FOR DETECTING COGNITIVE DISEASES AND IMPAIRMENTS IN HUMANS