Dr. John Carlisle, an NHS anaesthetist known for his work in identifying research fraud, joins the discussion about the integrity of nutrition studies. They unravel the complexities of the Mediterranean diet's trial data, revealing discrepancies that cast doubt on its acclaimed health benefits. The conversation shifts to the retraction of the PREDIMED study, emphasizing trust issues within nutrition research. Furthermore, they highlight the need for transparency and the significance of understanding the core components of dietary evidence to combat misinformation.
00:00
forum Ask episode
web_stories AI Snips
view_agenda Chapters
auto_awesome Transcript
info_circle Episode notes
question_answer ANECDOTE
Detecting Fabricated Trials With Table One
Dr John Carlisle describes discovering improbably consistent baseline data in Yoshitaka Fuji's papers that flagged potential fraud.
Fuji was later found to have fabricated many trials and had dozens of papers retracted, illustrating how table-one checks can expose fraud.
question_answer ANECDOTE
How PREDIMED's Randomisation Broke Down
John recounts how his statistical checks flagged the PREDIMED nutrition trial as suspicious well before its problems were publicly recognised.
The journal and authors later found non-random assignment practices and retracted then republished the study as observational.
insights INSIGHT
Large Effect Size Raised Stakes
The original PREDIMED report showed ~30% fewer heart attacks and strokes in Mediterranean-diet groups, a remarkably large effect.
That magnitude made the trial influential but also increased scrutiny once randomisation flaws emerged.
Get the Snipd Podcast app to discover more snips from this episode
It was one of the world's biggest nutrition trials. A study of thousands of people which found that following a Mediterranean diet could meaningfully reduce someone's risk of heart disease and stroke.
But as data detectives began to comb through the results of the trial, something wasn't quite adding up.
On Cooked this week, we're taking a look at what can go wrong when implementing a nutrition science trial at scale ... and what it means for one of the world's most popular diets.
Guests:
Dr John Carlisle
Anaesthetist, NHS, United Kingdom
Dr Gideon Meyerowitz-Katz
Epidemiologist, University of Wollongong
Dr Evangeline Mantzioris
Program Director, Nutrition and Food Sciences, University of South Australia
Credits:
Presenter: Dr Emma Beckett
Producer: Carl Smith
Senior Producer: James Bullen
Sound Engineer: Angie Grant
This story was made on the lands of the Gadigal, Wurundjeri, Jagera and Turrbal peoples.
Science Friction