
The Amp Hour Electronics Podcast #709 – Nobel Prize Winner Dr Barry Marshall
Nov 10, 2025
Dr. Barry Marshall, a Nobel Prize-winning physician and microbiologist, discusses his groundbreaking discovery of Helicobacter pylori as the cause of stomach ulcers. He reflects on the journey that led to the invention of the noninvasive urea breath test and how it changed ulcer diagnoses. Barry shares his enthusiasm for vintage electronics and highlights the importance of antibiotics in ulcer treatment while cautioning about their side effects. With humorous anecdotes about his Nobel Prize experience, he emphasizes the global impact of his work on health and treatment.
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Ulcers Caused By A Bacterium, Not Stress
- Barry Marshall discovered Helicobacter pylori causes most stomach ulcers, overturning a century-old stress theory.
- This insight transformed ulcer treatment from lifelong management to curable infections with antibiotics.
Nobel Call At The Pub
- Barry Marshall recounts learning the Nobel committee called Robin Warren while they were in a pub.
- They only found out minutes before the public announcement and rushed to tell family.
Practical Tips For Aspiring Scientists
- Work hard but keep life balance and be kind to Swedish people, Marshall jokes, as practical soft tips for young scientists.
- Maintain persistence and collegiality while pursuing significant research breakthroughs.

Dr Barry Marshall won the 2005 Nobel Prize in Physiology or Medicine for discovery of the bacterium Helicobacter pylori and its role in gastritis and peptic ulcer disease.