The real-life case of Joy Milne, who detected a musky scent years before her husband’s diagnosis, has inspired research into skin-based tests for earlier detection of Parkinson’s disease.
Did you know that the human nose can detect over one trillion different odors? Our sense of smell is incredibly powerful, tied closely to memory and survival. But recently, science discovered that our noses might also be a key tool for detecting serious medical conditions.
For caregivers, noticing subtle changes in a loved one or a client is part of the daily routine. But what if one of those changes was a smell?
The Story of Joy Milne
Joy Milne has a condition called hereditary hyperosmia, which gives her an extremely sensitive sense of smell. Years before her husband, Les, was officially diagnosed with Parkinson’s Disease, Joy noticed a strange change. Les had developed a unique, thick, and musky odor.
Joy did not realize the scent was connected to his health until they attended a Parkinson’s support group years later. She realized that people in the room had the exact same musky smell as her husband.
Joy’s unique observation prompted researchers at the University of Manchester to investigate her ability. They asked Joy to smell t-shirts worn by people with Parkinson’s and people without it. Remarkably, she correctly identified the shirts worn by Parkinson’s patients. She even identified a “healthy” person who actually went on to develop Parkinson’s months later.
This incredible discovery led researchers to study sebum, the natural oil on our skin that carries tiny odor-producing chemicals. Studies published in journals like Nature Communications show that Parkinson’s disease alters the lipids (fats) in sebum, changing the mix of these chemicals and potentially creating a distinct scent.
Thanks to Joy’s nose, researchers are now developing a simple, non-invasive skin swab test that can detect Parkinson’s disease with high accuracy. While this test is still in the research and development phase, it holds massive promise for the future. Catching Parkinson’s disease early means patients can access treatments, therapies, and support systems sooner, which can significantly improve their quality of life.
At Caregiverlist, Inc., Parkinson’s Disease is just one of the many vital topics covered in our state-approved caregiver training certifications. Stay informed on the latest evidence-based practices and elevate the quality of care you provide today.



