---
title: "John Ioannidis"
chunk: 5/5
source: "https://en.wikipedia.org/wiki/John_Ioannidis"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T03:42:37.127948+00:00"
instance: "kb-cron"
---

== Reception ==
In the 2000s and 2010s, during a period of regular publications from Ioannidis on the replication crisis in science, observers in the popular press commented that Ioannidis "may be one of the most influential scientists alive", and was "cementing his role as one of medicine's top mythbusters".
In 2014, The Economist featured Ioannidis and Steven Goodman in an article on the Meta-Research Innovation Center at Stanford, and George Johnson of the New York Times wrote an article on the importance of reproducible research, profiling Ioannidis's two 2005 papers as playing a critical role in raising concern about the issue in the scientific community, as later expressed by the journal Nature.
This acclaim continued into the late 2010s, with Wired mentionining Ioannidis as "arguably the replication crisis' chief inquisitor". His research on replicability reached multiple fields, including the specious statistics behind some drug subscriptions, and findings from Ioannidis that only a minority of widely cited health research studies carried out over the last decade could be replicated, with at least 1 in 6 actually being contradicted by later studies,. Elsevier featured his analogy of reproducibility in research to "taming a complex beast". He was also an early critic of Theranos.
However, Ioannidis's popularity began to wane during the COVID-19 pandemic, with some peers and colleagues criticizing his rhetoric and seeming loss of objectivity compared to his prior work. A March 2020 editorial in STAT news was particularly criticized, where he predicted the pandemic would result in 10,000 deaths at most. In 2021, David Gorski's article "What the heck happened to John Ioannidis?" described statements by Ioannidis about COVID-19 as inflammatory and politically charged, and said Ioannidis had made egregious ad hominem attacks. Gorski called Ioannidis "a cautionary tale of how even science watchdogs can fall prey to hubris". Ioannidis later denied that he mocked other researchers who expressed concern about the death toll of the pandemic.

== Awards and honors ==
Ioannidis has received elected membership to the National Academy of Medicine, the European Academy of Sciences and Arts, the  European Academy of Cancer Sciences, the American Epidemiological Society and the Association of American Physicians. For the 2022-2023 term, he is vice-president and president-elect of the Association of American Physicians.

Honorary degree, McMaster University (2024)
Albert Stuyvenberg Medal, European Society for Clinical Investigation (2021)
Einstein fellow, Berlin Institute of Health, Einstein Stiftung and Stiftung Charite (2019)
Epiphany Science Courage Award, Novim (inaugural award) (2018)
Chanchlani Award for Global Health, McMaster University (2017)
David-Sackett-Preis, Deutsche Netzwerk Evidenzbasierte Medizin (2017)
Lifetime Achievement Award, Hellenic Society for Pharmacological Science (2016)
Medal for Distinguished Service, Teachers College, Columbia University (2015)
European Award for Excellence in Clinical Science, European Society for Clinical Investigation (2007)

== See also ==
Evidence-based medicine
Open science
Publication bias
Replication crisis
Reproducibility Project
Composite index

== Notes ==

== References ==

== External links ==

Prevention Research Center Stanford School of Medicine
Publications of John Ioannidis Stanford University Profile
Increasing value and reducing waste in research design, conduct, and analysis The Lancet, Vol. 383, Issue 9912, pp. 166–75, January 11, 2014, John P A Ioannidis, Sander Greenland, Mark A Hlatky, Muin J Khoury, Malcolm R Macleod, David Moher, Kenneth F Schulzand Robert Tibshirani
Szgene.org, meta-analytic database of schizophrenia gene studies of which Ioannidis helped create.
"Talk Spezial" – Interview with John Ioannidis OT. In: ServusTV, June 29, 2021.