The Pat Kenny Show The Pat Kenny Show

What causes morning sickness during pregnancy?

Sep 19, 2026 · 9m

Summary

Luke O'Neill, a Trinity College professor, joins Pat Kenny from New York to discuss a major breakthrough in understanding morning sickness. They explain that the fetus produces a protein called GDF15 to protect against toxins, causing nausea in mothers. O'Neill details how this discovery is leading to treatments for severe hyperemesis gravidarum and cancer-related side effects like chemotherapy nausea and muscle wasting. The conversation also touches on the growing role of AI in accelerating drug discovery and medical diagnostics.

Topics discussed

Introduction: Professor Luke O'Neill and the GDF15 breakthrough Morning sickness timeline: onset and duration Impact on work and the myth of 'morning' sickness Hyperemesis gravidarum: severe cases and hospitalization Notable cases: Kate Middleton and Charlotte Brontë Home remedies: diet, ginger, and Vitamin B6 The cause: Fetus produces GDF15 protein Evolutionary purpose: Protecting against dietary poisons Genetics: Why 3% of women suffer severe symptoms New treatment: Clinical trials to dial down GDF15 Chemotherapy applications: Reducing nausea and cachexia AI in biomedical research and drug discovery
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