Podcast Summary: The nurse who can smell Parkinson’s | Joy Milne

TED Talks Daily | April 6, 2026
Speaker: Joy Milne | Host: Elise Hu

Overview

This episode features Joy Milne, a Scottish nurse with hereditary hyperosmia—a heightened sense of smell—who discovered she could detect Parkinson’s disease by scent years before traditional diagnosis methods. Joy recounts her personal journey, the life-changing implications for medical diagnostics, and her ongoing advocacy for earlier, non-invasive detection of Parkinson’s using smell-based methods.

Key Discussion Points & Insights

Joy’s Extraordinary Sense of Smell and Its Origins

• Joy was born with a hyper-sensitive nose, a trait passed down from her mother and grandmother.
• She recalls her childhood confusion and social challenges, with her grandmother guiding her to both cherish and keep secret her unique ability.
  • Quote (Joy Milne, 03:55):

    “My mother had the nose, I have the nose now you hate. But don’t you worry, I will help you the way my mother helped me.”

• Joy learned to separate and identify different “volatiles”—the distinct scents emitted by people and everyday objects.
  • Quote (Joy Milne, 05:15):

    “My grandmother took a smell, she separated it and there was never one smell. It became volatiles.”

Nursing Career and the “Olfactory Library”

• Joy’s nursing work exposed her to numerous diseases and medical conditions, which she identified and cataloged in her “nursing bag of smells.”
• The hospital wards of the 1960s and 1970s provided a strong olfactory education due to the lack of disposables and more intense scents of disease.
  • Quote (Joy Milne, 06:15):

    “I had acquired a medical olfactory library. I called it my nursing bag of smells.”

Detecting Parkinson’s in Her Husband

• Joy noticed a change in her husband Les’s scent in his early 30s—years before he developed symptoms.
• Les was eventually diagnosed medically with Parkinson’s 12 years later; Joy had unknowingly detected it first by smell.
  • Quote (Joy Milne, 07:10):

    “Unknown to us, I had diagnosed him with a disease. My nose had diagnosed him. And it took medicine 12 years later to catch up.”

The “Aha” Moment and Scientific Collaboration

• At a Parkinson’s disease support meeting, Joy realized the same distinctive scent was present in others, allowing her to distinguish between those with and without the disease.
• With Les’s support, Joy approached Dr. Tilo Kunath at a Parkinson’s UK lecture, proposing research into Parkinson’s as a scent-based biomarker.
  • Quote (Joy Milne, 10:25):

    “Why are we not using the smell of Parkinson’s to diagnose it earlier?”

Scientific Validation and The T-Shirt Test

• Collaborating with researchers, a blind test was carried out using T-shirts worn by both Parkinson’s patients and healthy controls.
• Joy correctly identified all Parkinson’s cases and even “pre-diagnosed” one control who developed the disease six months later.
  • Memorable Moment (Joy Milne, 13:55):

    “I had one false positive. Oh no, said I. That person came back six months later and said, I have Parkinson’s.”

“Nose to Diagnose”: New Diagnostic Tests

• More than 2,000 participants have contributed samples, leading to the development of a non-invasive, swab-based test to detect Parkinson’s early using changes in skin sebum and scent.
  • Quote (Joy Milne, 15:30):

    “To translate the test they've designed a very simple test, non invasive swab or Q tip round the face or the back of the neck.”

Joy’s Ongoing Advocacy and Personal Drive

• Joy continues as an international advocate:
  • World Parkinson’s Coalition and Congress
  • Women’s Council and Young Onset Parkinson’s Disease (YOPD) Council
  • Co-creating courses for carers and healthcare professionals
• Joy’s promise to Les, who passed away after the initial trials, motivates her to advance early diagnosis for others.
  • Quote (Joy Milne, 18:50):

    “He made me promise that I would continue this research. And I now realize I have fulfilled my promise to him.”

Expanding Smell Detection to Animals

• Recent collaboration in Tanzania with Dr. Drupad Trivedi explores training African pouch rats to detect diseases, inspired by Joy’s olfactory findings.
  • Quote (Joy Milne, 19:35):

    “The rats are trained from being very young to actually detect landmines or TB. They are binary… We gave them urine, breathomics, sebum and sputum as well.”

The Broader Implications and Call to Action

• Early, noninvasive disease detection could vastly improve lives—especially for misdiagnosed women and young patients.
• Joy reflects on her grandmother’s advice and her mission to share her discovery with the world.
  • Quote (Joy Milne, 20:40):

    “What would my grandmother say it would be? Not ‘don’t tell anybody’—Go on, lass, tell the world!”

Timestamps for Key Segments

• 00:16–01:02 — Personal Story: Smelling Parkinson’s in Her Husband
• 03:43–08:30 — Childhood, Family Heritage, and Nursing Career
• 09:20–11:45 — First Parkinson’s Meeting and Realization
• 12:30–15:10 — Scientific Collaboration and the T-shirt Smell Test
• 15:10–17:01 — “Nose to Diagnose” Research Impact and Non-Invasive Test
• 17:01–18:50 — Advocacy, Support Groups, and Personal Motivation
• 18:51–20:46 — African Pouch Rats, Expanding the Research, Broader Impact

Notable Quotes

• On inherited ability:

  “People dinna smell the way we can. My mother had the nose, I have the nose now you hate.”
  (Joy Milne, 04:12)

• On first smelling Parkinson’s in Les:

  “By the time he was 33, this smell was his dominant smell. But unknown to us, I had diagnosed him with a disease. My nose had diagnosed him and it took medicine 12 years later to catch up.”
  (Joy Milne, 07:05)

• On advancing diagnostic testing:

  “We have done over 2,000 participant samples... developing a fast five-minute diagnostic test.”
  (Joy Milne, 15:50)

• On her purpose and drive:

  “He made me promise that I would continue this research. And I now realize I have fulfilled my promise to him.”
  (Joy Milne, 18:50)

• On breaking the silence:

  “What would my grandmother say… Not ‘don’t tell anybody’—Go on, lass, tell the world!”
  (Joy Milne, 20:40)

Memorable Moments

• Realization that she could smell Parkinson’s before doctors could diagnose it, leading to a paradigm-shifting collaboration.
• Empathetic, heartfelt description of her partnership with Les and the “promise” that propels her advocacy.
• The proof-of-concept “false positive” who later developed Parkinson’s, cementing the value of olfactory detection.
• Expansion to training animals for disease detection, hinting at a future where such tests are scalable and accessible globally.

Conclusion

Joy Milne’s story is a powerful testament to the overlooked senses in medicine, the importance of curiosity and persistence, and the deeply human experiences at the root of scientific progress. Her journey illustrates how unique personal abilities, combined with scientific rigor, can create breakthroughs for entire communities—turning individual perception into a public good.

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