Gideon Meyerowitz-Katz
Australian epidemiologist and research fellow who writes about how to read health research, often under the name Health Nerd. His newsletter covers nutrition, exercise, COVID-19 and problems in published science.
Gideon Meyerowitz-Katz did not write this page. ppll compiled it from their own words, each linked to the source. Is this you? · Report a mistake
What they believe
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AI technologies have an overwhelming feel of total takeover compared to previous disruptive technologies.
Email definitely did away with some aspects of our lives, but it didn't have the overwhelming feel of total takeover that AI technologies do today.
gidmk.substack.comSaid 13 Oct 2026This on korrents
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COVID-19 is about as bad as an average seasonal virus in 2026.
I think it's entirely reasonable to say that COVID-19 is about as bad as your average seasonal virus in 2026, something that I could never imagine myself saying way back in 2020.
gidmk.substack.comSaid 25 Sept 2026This on korrents
The bold line is korrents’ wording; the quote is theirs. These 2: what they wrote before what they said aloud, one per source, newest first.
Beliefs
Korrents What they believe 16 beliefs — each backed by an exact quote.
Each is a — compiled by korrents.com, not by them: the one-line wordings are korrents', the quotes are theirs.
Recent
AI technologies have an overwhelming feel of total takeover compared to previous disruptive technologies.
Email definitely did away with some aspects of our lives, but it didn't have the overwhelming feel of total takeover that AI technologies do today.
Gideon M-K: Health Nerd Said 13 Oct 2026
Using AI tools long-term may cause people to miss out on the opportunity to learn how to do tasks themselves.
Certainly, if you use AI tools long-term you miss out on the opportunity to learn how to do it yourself.
Gideon M-K: Health Nerd Said 13 Oct 2026
COVID-19 is about as bad as an average seasonal virus in 2026.
I think it's entirely reasonable to say that COVID-19 is about as bad as your average seasonal virus in 2026, something that I could never imagine myself saying way back in 2020.
Gideon M-K: Health Nerd Said 25 Sept 2026
Show 13 more
The risk of Long COVID is not greater than the risk of long-term symptoms from parainfluenza or adenovirus.
I don't think the risk of Long COVID is any greater than the risk that you might experience long-term symptoms from parainfluenza or adenovirus at this point, and it may well be lower.
Gideon M-K: Health Nerd Said 25 Sept 2026
There is no incentive for general mask rules in 2026.
But as a rule, I don't think that there's any incentive these days for general mask rules.
Gideon M-K: Health Nerd Said 25 Sept 2026
The literature regarding exercise as a treatment for depression is extremely problematic.
As I've been saying for a while, the literature around exercise as a way to treat depression is extremely problematic.
Gideon M-K: Health Nerd Said 15 Sept 2026
Several impactful studies regarding exercise for depression have serious issues that make them useless as evidence.
Several of the most impactful studies in the area have serious issues that make them useless as evidence.
Gideon M-K: Health Nerd Said 15 Sept 2026
No one should use the specific Saudi Arabian randomized trials on exercise for depression as evidence for medical treatments.
We cannot say for sure if these trials happened or not, but we can say that no one should ever use them as evidence for medical treatments.
Gideon M-K: Health Nerd Said 15 Sept 2026
There is no good reason to believe that people who support "gender ideology" are more likely to be violent extremists.
There's no good reason to believe that people who support "gender ideology", however you define it, are more likely to be violent extremists.
Gideon M-K: Health Nerd Said 28 Aug 2026
The study's findings that "gender ideology" makes left-wing people more prone to violence is ridiculous.
In other words, "gender ideology" makes left-wing people more prone to violence because it signals to the group the people deserving of that violence. This is, in a word, ridiculous.
Gideon M-K: Health Nerd Said 28 Aug 2026
The survey used in the study measured political affiliation rather than actual authoritarianism.
In my opinion, all the authors have done in this farce of a survey is measured political affiliation.
Gideon M-K: Health Nerd Said 28 Aug 2026
The media provides significantly more coverage to academic misconduct involving Black academics than white academics.
This sort of massive media storm almost never happens for white academics who do naughty things, especially in the UK. They may get some pushback, but it fades far more quickly, and their careers often survive the investigations.
Gideon M-K: Health Nerd Said 17 Aug 2026
Jason Arday's thesis contained extensive and obvious plagiarism.
It is clear that a significant portion of the thesis was copied directly from other people's work. This is not in doubt, it's not in question, and the fact that so many people online are arguing that the plagiarism charges are false because a university said so is deeply depressing.
Gideon M-K: Health Nerd Said 17 Aug 2026
Universities should fire individuals found to have substantial plagiarism in their PhD theses and published work.
It's a truly ridiculous crime, and I'd expect any university to fire someone who was found to have substantial plagiarism in their PhD thesis and published work.
Gideon M-K: Health Nerd Said 17 Aug 2026
Full-fat dairy is slightly worse for health than low-fat options.
As this study-and all of the previous literature-has shown, full-fat dairy is a bit worse for your health than low-fat options.
Gideon M-K: Health Nerd Said 11 Aug 2026
Low-fat options are likely the best way to lose weight and lower cholesterol.
Full-fat is not going to kill you, but if you want to lose weight and lower your cholesterol, low-fat is probably the best way to go.
Gideon M-K: Health Nerd Said 11 Aug 2026
What is a korrent?
A korrent is a belief a person has stated in their own words: one sentence stating the claim, backed by a quote and a source, kept at korrents.com.
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Where they publish
Newsletter Gideon M-K: Health Nerd Explainers on what new health studies do and do not show
Link verified 24 Oct 2026.
x.com @GidMK Posts on epidemiology and research quality
Link verified 24 Oct 2026.
Bluesky gidmk.bsky.social Posts on health research and epidemiology
Link verified 24 Oct 2026.
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