Olfactory function is preserved in about a quarter of patients with Parkinson’s disease (PD), and may be predictive of disease course, say researchers. Olfactory testing has been used as a screening ...

As humans age, particularly after middle age, their brain functions, cognitive abilities and memory can deteriorate to varying degrees. Aging-related disorders marked by cognitive decline, ...

The sense of smell is a complex process of the central nervous system that involves specific areas of the brain. In fact, olfactory dysfunction is seen in various central nervous system disorders that ...

Humans have about 400 odorant receptors (ORs), but scientists have had trouble finding ligands that match up with most of these ORs in lab settings—leaving them with a murky understanding of how ...

Olfactory dysfunction in MS may be linked to nasal microbial changes, not just central inflammation. MS patients showed lower olfactory test scores and distinct nasal microbiome differences compared ...