Uploaded April 2023 | Updated September 2026, 2 days ago
Back in early days of the COVID-19 pandemic, Dr. John Ioannidis wrote an article in March of 2020 questioning government statistics about the fatality rate associated with COVID-19. The backlash was swift and brutal and John’s reputation as one of the most influential scientists in the world took a beating.
Today, Ioannidis makes his second appearance on STEM-Talk to discuss his extensive research into the COVID-19 pandemic as well as the public shaming he received in 2020 for questioning the World Health Organization’s prediction of a 3.4 percent fatality rate associated with COVID-19.
He talks about his most recent peer-reviewed paper that looked at the age-stratified infection fatality rate of COVID-19 in the non-elderly population. The study found that the pre-vaccination fatality rate for those infected may have been as low as 0.03 percent for people under 60 years old, and 0.07 percent for people under 70, far below the World Health Organization’s prediction of a 3.4 percent fatality rate.
In this episode, Ioannidis walks us through this paper, as well as what he describes as the U.S. government’s bungled response to COVID-19. He also discusses the importance of collecting reliable data in the future to guide disease modelers and governments before they make decisions of monumental significance like lockdowns. He goes on to share how he underestimated the power that politics and the media, or powers outside of science, can have on science.
Over the past two decades, his research has earned him a global reputation as a consummate physician and researcher, which contributed to The Atlantic describing him in 2010 as one of the most influential scientists alive. He is a professor of Medicine, Epidemiology and Population Health as well as a statistician and professor of biomedical data science at Stanford University.
Back in 2018 when we interviewed him on episode 77 of STEM-Talk, we talked about his 2005 paper questioning the reliability of most medical research. The paper, titled, “Why Most Published Research Findings Are False,” found that much of the medical science reported in peer-reviewed journals is flawed and cannot be replicated. The paper is the most citied article in the history of the journal PLoS Medicine and has been viewed more than 3 million times.
Full shownotes: ihmc.us/stemtalk/episode-151
00:00 Intro
03:00 Start of Interview
1:09:04 End of Interview
Back in early days of the COVID-19 pandemic, Dr. John Ioannidis wrote an article in March of 2020 questioning government statistics about the fatality rate associated with COVID-19. The backlash was swift and brutal and John’s reputation as one of the most influential scientists in the world took a beating.
Today, Ioannidis makes his second appearance on STEM-Talk to discuss his extensive research into the COVID-19 pandemic as well as the public shaming he received in 2020 for questioning the World Health Organization’s prediction of a 3.4 percent fatality rate associated with COVID-19.
He talks about his most recent peer-reviewed paper that looked at the age-stratified infection fatality rate of COVID-19 in the non-elderly population. The study found that the pre-vaccination fatality rate for those infected may have been as low as 0.03 percent for people under 60 years old, and 0.07 percent for people under 70, far below the World Health Organization’s prediction of a 3.4 percent fatality rate.
In this episode, Ioannidis walks us through this paper, as well as what he describes as the U.S. government’s bungled response to COVID-19. He also discusses the importance of collecting reliable data in the future to guide disease modelers and governments before they make decisions of monumental significance like lockdowns. He goes on to share how he underestimated the power that politics and the media, or powers outside of science, can have on science.
Over the past two decades, his research has earned him a global reputation as a consummate physician and researcher, which contributed to The Atlantic describing him in 2010 as one of the most influential scientists alive. He is a professor of Medicine, Epidemiology and Population Health as well as a statistician and professor of biomedical data science at Stanford University.
Back in 2018 when we interviewed him on episode 77 of STEM-Talk, we talked about his 2005 paper questioning the reliability of most medical research. The paper, titled, “Why Most Published Research Findings Are False,” found that much of the medical science reported in peer-reviewed journals is flawed and cannot be replicated. The paper is the most citied article in the history of the journal PLoS Medicine and has been viewed more than 3 million times.
Full shownotes: ihmc.us/stemtalk/episode-151
00:00 Intro
03:00 Start of Interview
1:09:04 End of Interview










![Episode 194: Tommy Wood discusses how to future-proof the adult brain
Neuroscientist and frequent STEM-Talk guest Dr. Tommy Wood rejoins us today for part two of our interview about Tommy’s book that is fresh off the press and now available in bookstores and Amazon, “The Stimulated Mind: Future-Proof Your Brain from Dementia and Stay Sharp at Any Age.” (https://www.penguinrandomhouse.com/books/751292/the-stimulated-mind-by-dr-tommy-wood/)
Tommy is an Associate Professor of Pediatrics and Neuroscience at the University of Washington, where his laboratory focuses on brain health across human lifespan. Tommy is a colleague and good friend who also is a Visiting Research Scientist here at IHMC.
In part one of our interview with Tommy, episode 193, we discussed his mission to dispel the myth that the brain is doomed to decline with age. Tommy gave us a fascinating history of neuroscience and how researchers go about studying the brain. Tommy also talked about what is holding us back in terms of addressing an ever-increasing burden of cognitive and mental health disorders that we are experiencing not only here in the U.S., but also around the world.
Today, Tommy shares science-backed strategies to help people future-proof their brains. We talk about the importance of diet and exercise in terms of brain health as well as the importance of stimulating and challenging our brains throughout our lifespans.
Tommy has a bachelor’s degree in biochemistry from the University of Cambridge, a medical degree from the University of Oxford, and a Ph.D. in Physiology and Neuroscience from the University of Oslo.
Show notes:
[00:03:55 Dawn welcomes Tommy back for part two of his interview by asking him about his recent trip to the UK.
[00:04:32] Dawn recaps where we left off with Tommy in part one of our interview, explaining that when we last spoke with Tommy about his book, The Stimulated Mind, we focused on dispelling myths about the adult brain, in particular the idea that the adult brain is fixed.
[00:05:22] Ken asks Tommy about advice his father offered when Tommy got accepted into the University of Cambridge.
[00:08:03] As a follow-up, Dawn asks if it’s fair to say that when Tommy first started working with patients, what he learned in textbooks and classrooms didn’t necessarily translate perfectly into the real world and that there is no one-size-fits-all fix.
[00:11:54] Ken asks Tommy to expand on what he wrote in his book about the fact that while science can give us a framework for understanding the world, we are always only one experiment or one well-phrased question away from having to completely rethink everything.
[00:16:44] Dawn launches into talking about what people can do to future-proof their brain, starting with diet. In the Nourish chapter of his book, Tommy seeks to help people see food as an opportunity for nourishment rather than a source of stress since there are so many conflicting messages about diet and healthy foods out there. Dawn asks Tommy if his opinion is that there is no one-size-fits-all diet?
[00:22:21] Dawn explains that what we eat has a direct effect on our long-term health and dementia risk, and within the literature a common theme that emerges regarding eating for brain health is maximizing nutrients. Dawn asks Tommy to talk about what this looks like.
[00:24:49] Dawn points out that people today are inundated with advice from health influencers in all directions. She asks Tommy to talk about his advice to tune out the noise and instead of chasing whatever supplement or super food that is currently in vogue, simply to focus on filling your diet with whole, nutrient dense foods.
[00:29:43] Ken explains that nutrients are sometimes hard to get in the diet, with somewhere between 15 and 25 percent of people in the U.S. and Europe having inadequate intakes of most B vitamins and even higher deficits in iron, magnesium, calcium, and vitamins C and E, with nutrient deficiencies differing by sex. Women on average are lower in B12, iron, iodine, and calcium, while men are typically lower in magnesium, zinc, and various B vitamins. Ken asks Tommy to give an overview of what these nutrients do in the brain that makes them so critical to cognitive function.
[00:35:51] Ken follows up on this discussion by moving on to the section in Tommy’s book titled “To Supplement or Not to Supplement” where he discusses the evidence of the benefits of targeted supplementation to fill in the nutrient gaps that exist in the diet. Ken asks Tommy to talk about this more in depth and maybe give a framework by which people can think about adding or not adding key nutrients via supplementation.
[00:41:21] Given the controversial reputation red meat has, Ken asks Tommy to weigh in on how he thinks people should think about red meat.
[00:46:26] Fish as well, Dawn explains, has become controversial, due to microplastics and mercury concerns. However, given the positive effects on cognitive health that fish consumption has, Dawn asks To... Episode 194: Tommy Wood discusses how to future-proof the adult brain](https://i.ytimg.com/vi/sgCmjaWrNuU/mqdefault.jpg)