The Global Story Are conspiracy theories America’s biggest export?
Sep 30, 2025
Marianna Spring, BBC's Social Media Investigations Correspondent, dives into the troubling impact of American conspiracy theories on a British family. She reveals how a mother's extreme skepticism about science led to dire consequences, highlighted by her daughter's tragic health decisions. The discussion also explores the radicalization process fueled by misinformation, illustrating how these harmful narratives travel across borders and influence lives. Spring connects this family story to a broader trend of anti-medicine movements gaining traction globally.
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Early Reporting From Close Contact
- Marianna Spring met Kate Shemarani early in the pandemic and found her charismatic yet promoting dangerous misinformation.
- Shemarani presented as a “natural nurse” while her children privately warned reporters about her influence.
Childhood Immersed In Conspiracy
- Sebastian and Gabriel describe growing up immersed in conspiracy theories from their parents, including listening to Alex Jones in the car.
- Their father became radicalised after 9/11 and pulled the family into conspiratorial beliefs.
Alternative Medicine Became Her Platform
- Kate Shemarani turned to alternative medicine after a 2012 breast cancer diagnosis and presented it as a cure.
- She built an online brand as the “natural nurse” and promoted unproven regimens publicly.