Understanding Smell Loss In Parkinson's Disease (2025)

In this webinar, Dr. Zara Patel, a professor at Stanford University and an expert in olfactory disorders, explained that smell loss was a common, early, and often overlooked symptom of Parkinson’s disease, affecting safety, nutrition, emotional well-being, and social connection. She described how the olfactory system connected directly to brain regions involved in memory and emotion, which helped explain why olfactory dysfunction often appeared about a decade before Parkinson’s diagnosis. 

Dr. Patel outlined drawbacks of current subjective smell tests, noting that combining them with biomarkers greatly improved diagnostic accuracy. She discussed treatments such as olfactory training, omega-3 supplementation, and platelet-rich plasma injections, all aimed at supporting neuronal regeneration. 

She also highlighted emerging research into electrical stimulation of olfactory nerves, as well as efforts to create objective neural recording devices. In addition, she addressed environmental contributors, including infections and air pollution, which might initiate or accelerate neurodegeneration. 

Overall, she emphasized that the olfactory pathway offered crucial opportunities for early detection, targeted therapies, and improved understanding of Parkinson’s progression.

**Disclaimer: These sessions are designed to provide general education and are not intended for individual advice and/or clinical care. The information conveyed in this recording was accurate at the time of presentation.**