Bartzokis—what they thought about the proposed test, and their responses were less than enthusiastic. For example, Bartzokis said, "The principal problem with smell tests is that they are nonspecific and therefore only one small piece of the diagnostic puzzle." Attempts at replication In 2014, a study was published, also in the Journal of the Neurological Sciences, which found no evidence of a left-right asymmetry in nasal function in Alzheimer's disease patients. References Peanut butter Alzheimer's disease research Medical tests Olfaction 2013 in science 2013 introductions