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Health Nerd

@gidmk.bsky.social
31K followers 431 following 2.9K posts

Epidemiologist. Research Fellow. Doctor of Spreadsheets. Writer (Slate, TIME, Guardian, etc). PhD, MPH. Host of senscipod Email gidmk.healthnerd@gmail.com he/him. Find my writing on Substack and Medium.

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Reposted by Health Nerd
Angie Rasmussen @angierasmussen.bsky.social · 07/10/2026
Will Russian lab leak plague (?) become a pandemic? Is it a bioweapon? Is it even plague? WHO KNOWS?!? Fantastic epi @gidmk.bsky.social & I broke down what little we do know about the situation rasmussenretorts.substack.com/p/a-plague-u...
rasmussenretorts.substack.com
A Plague Upon Siberia
There was a lab leak at a plague research lab in Irkutsk. Does this mean the Black Death is back?
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Reposted by Health Nerd
Prof Gavin Yamey MD MPH @gavinyamey.bsky.social · 04/10/2026
I do try my best not to hate people (my parents taught me that "hate eats you up"), but, well, when it comes to RFK Jr, who is motivated both by his eugenicist beliefs & his truly horrific financial conflicts of interest to cause as much pain, suffering, & death as he can, I'm afraid I do feel hate
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Health Nerd @gidmk.bsky.social · 05/10/2026
Thinking about how Russia spent much of the pandemic lying about their COVID-19 numbers and what that says about their public health responses. Graph from Dmitry Kobak
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Health Nerd @gidmk.bsky.social · 02/10/2026
What is the real cause of the autism and ADHD epidemics? It's not what RFK Jr thinks. In fact, it's incredibly simple and mostly to do with how we define and assess the conditions. My new piece: gidmk.substack.com/p/the-real-c...
gidmk.substack.com
The Real Cause Of The Autism And ADHD Epidemic
It’s not what you think.
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Health Nerd @gidmk.bsky.social · 02/10/2026
I very much understand coming from a place where a terrible thing has happened to you and feeling more cautious because of it - we all have trauma - but I don't think that the data supports people being concerned of LC in their daily lives in 2026.
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Health Nerd @gidmk.bsky.social · 02/10/2026
But even in a worst case scenario, that puts the likelihood of someone experiencing significantly activity-limiting LC at somewhere in the region of 1 in 2500 per year. I suspect it's below that at this point, but it could certainly be that high.
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Health Nerd @gidmk.bsky.social · 02/10/2026
Of those cases of LC, around 1 in 5 - or 1 in 500 infections - will result in LC that is significantly activity-limiting. At this point, it's hard to estimate the rate of infection in the population. I've seen people saying everywhere from 5%-20% of the population is getting COVID-19 each year.
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Health Nerd @gidmk.bsky.social · 02/10/2026
I wrote about the likely incidence per infection of LC using the best available data back in 2023. I don't think there has been any new robust datasets released since then, making this imo the best current estimate. It's around 1 per 100 infections: gidmk.substack.com/p/the-ongoin...
gidmk.substack.com
The Ongoing Risk Of Long COVID
What are the rates of ongoing COVID-19 symptoms in 2023 and beyond?
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Health Nerd @gidmk.bsky.social · 02/10/2026
That means that the figures in this paper give us no idea of the rate of LC either in the population now or per infection. (As a side-note, RECOVER also recruited people who'd had past infections so even if it was a measure of prevalence it would not be useful for incidence).
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Health Nerd @gidmk.bsky.social · 02/10/2026
Take the RECOVER study as an example. I believe this is the one that you mean: pmc.ncbi.nlm.nih.gov/articles/PMC... The RECOVER cohort was never intended to be a measure of either incidence or prevalence of LC. The authors intentionally oversampled people with LC to have more of them in the study
pmc.ncbi.nlm.nih.gov
Age-related changes in the clinical picture of Long COVID
This study evaluated the impact of aging on the frequency and prevalent symptoms of Long COVID, also termed post-acute sequelae of SARS-CoV-2, using a previously developed Long COVID research index (L...
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Health Nerd @gidmk.bsky.social · 02/10/2026
I'm really sorry to hear that you are unwell. That sucks! In terms of the statistics, however, I manifestly disagree. I think that you are overestimating the incidence of LC by at least an order of magnitude there.
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Reposted by Health Nerd
Elisabeth Bik @elisabethbik.bsky.social · 29/09/2026
Boot Camp Promises a Submitted Paper in Just 2 Days— Critics worry AI-aided program enables shoddy research "Systematic Review and Meta-Analysis in 1 Weekend" @rachrobertson.bsky.social reports @medpagetoday.com Quotes by Matt Spick, @gidmk.bsky.social, and me. www.medpagetoday.com/special-repo...
medpagetoday.com
Boot Camp Promises a Submitted Paper in Just 2 Days
Critics worry AI-aided program enables shoddy research
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Health Nerd @gidmk.bsky.social · 28/09/2026
I talked about Long COVID several times and referenced two much longer pieces which go into more detail. Age is also the biggest risk factor for Long COVID.
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Health Nerd @gidmk.bsky.social · 27/09/2026
Always fun to come on to Bluesky to say things about COVID-19 that are totally uncontroversial everywhere else only to get unhinged rants about how WeRe STilL iN a PaNdEMiC
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Health Nerd @gidmk.bsky.social · 27/09/2026
I'm still most interested in you being specific with your various veiled insults. Can you tell me what you meant by "quite calculated"?
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Health Nerd @gidmk.bsky.social · 27/09/2026
Oh, also, the implication that I'm a "pseudoscience weirdo". Feels like the sort of thing that an adult who cares about basic integrity might apologize for.
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Health Nerd @gidmk.bsky.social · 27/09/2026
That is the clear implication of your first post: bsky.app/profile/domi... I'm interested to know what you mean by "quite calculated". Please be specific.
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Health Nerd @gidmk.bsky.social · 27/09/2026
Fair enough, I was mostly talking about your graph. Perhaps you should also take back the implication that I'm insane and living in a different reality for making statements that the data you have cited largely supports.
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Health Nerd @gidmk.bsky.social · 26/09/2026
This is mirrored in datasets such as there longitudinal wastewater data from the Netherlands which shows exponentially lower rates of COVID-19 year on year as I noted in my article. So MUCH lower incidence of COVID-19 and lower incidence per infection.
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Health Nerd @gidmk.bsky.social · 26/09/2026
In NSW where I live, COVID-19 and influenza tests are generally run at the same time. While positives are still not a great estimate of incidence, they are nevertheless excellent estimates of RELATIVE incidence for this reason. Influenza is at normal levels, COVID-19 has geometrically decreased
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Health Nerd @gidmk.bsky.social · 26/09/2026
Not about COVID-19 incidence, about the incidence of LC per infection compared to Long Flu. And you asked for solid data and then presented completely arbitrary extrapolations based on your own personal assumptions which are at best not well supported so...
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Health Nerd @gidmk.bsky.social · 26/09/2026
That being said, given that there are less than half the number of COVID-19 infections per year in solid datasets like NSW, it would take staggeringly high rates of LC for it to still be causing more long-term illness than influenza in 2026.
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Health Nerd @gidmk.bsky.social · 26/09/2026
Worth noting of course that the absence of data also means that anyone claiming the opposite - that COVID-19 has worse long-term outcomes - is not basing this on real evidence. I think it's a matter of debate at this point.
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Health Nerd @gidmk.bsky.social · 26/09/2026
...albeit with slightly higher incidence for COVID-19 from 2022, it would be extremely surprising to me if COVID-19 was still causing more significant disease. It's possible, but I think very unlikely.
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Health Nerd @gidmk.bsky.social · 26/09/2026
Complete speculation on my part, that's why I said "I think". What we can say from the data is that Long COVID has decreased substantially as an issue and that COVID-19 itself is much less severe than influenza. Given the data showing similar long-term outcomes from both diseases
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Health Nerd @gidmk.bsky.social · 25/09/2026
I linked to the data in my piece, I think it's quite compelling.
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Health Nerd @gidmk.bsky.social · 25/09/2026
That article is reasonable but the headline is VERY misleading. I'd suggest reading the actual research, it doesn't show what you think it does.
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Health Nerd @gidmk.bsky.social · 25/09/2026
I understand completely! I don't think that masking is an inherently ridiculous thing to do, just that mask mandates don't really have a place these days in most settings (particularly a bar).
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Health Nerd @gidmk.bsky.social · 25/09/2026
New piece on the Last Ditch bar shenanigans and how it's remarkable that some people are still misattributing COVID-19 risk. gidmk.substack.com/p/the-last-d...
gidmk.substack.com
The Last Ditch Mask Fight: What Are The Risks of COVID-19 in 2026?
A discussion that we’re still somehow having
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Health Nerd @gidmk.bsky.social · 24/09/2026
In contrast, a 45yo is at around ten times the risk of a 25yo on average.
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Health Nerd @gidmk.bsky.social · 24/09/2026
There are definitely risk increases caused by disability, but the increases were dwarfed by the risk from age. A blind wheelchair user with POTS, diabetes, and an amputation would be at about double the risk of death or serious disease to someone the same age as them.
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Health Nerd @gidmk.bsky.social · 24/09/2026
Disability was NEVER a major risk factor for COVID-19. The biggest risk factor was always age BY FAR. COVID-19 also hasn't been a primary health concern for years!
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Health Nerd @gidmk.bsky.social · 24/09/2026
The lesbian bar/masking story is wild for many reasons, but most of all because it shows the deeply bizarre beliefs people still hold about COVID-19, disability, and risk in 2026.
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Health Nerd @gidmk.bsky.social · 23/09/2026
Meanwhile, you're damaging the entire purpose of a bar existing in the first place: social connection.
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Health Nerd @gidmk.bsky.social · 23/09/2026
The risk difference caused by wearing masks to a bar - a place where people eat, drink, and, uh, make merry - is extremely small. I would not be surprised if the benefit was genuinely too small to measure outside of perhaps the height of flu season.
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Health Nerd @gidmk.bsky.social · 23/09/2026
The wildest part of this story is that there are bars enforcing masking regulations in 2026 at all.
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Health Nerd @gidmk.bsky.social · 23/09/2026
Bars area places for socialising. Masks make that quite a bit harder.
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Health Nerd @gidmk.bsky.social · 23/09/2026
...maybe? Probably not going to make a great difference in risk but it would do something. The bigger question is why would you enforce a policy like this in 2026. Outside of the peak of flu season, the impact is going to be extremely small and the negatives are pretty big.
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Reposted by Health Nerd
Matthew B. Jané @matthewbjane.bsky.social · 20/09/2026
The Audit Clinical Evidence (ACE) Initiative posted an update to the first audit report (wrt Abdelbasset et al 2019). @gidmk.bsky.social found some additional errors in the baseline tables that have now been included in the report. auditclinicalevidence.org/reports/ACE2...
auditclinicalevidence.org
Audit of Abdelbasset et al. (2019) – ACE
Three 2019 RCTs on exercise for depression in heart failure: overlapping trial arms, duplicated PHQ-9 data, impossible statistics and baseline p-values. 25 integrity violations; retraction recommended...
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Health Nerd @gidmk.bsky.social · 20/09/2026
I think it's even more limited when we're talking medical trials. There is almost no plausible way to get Cohen's d>2 for most biological variables in a randomized trial. For context, the effect sizes of high-dose Ozempic on blood sugar and weight sit around 1.5
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Health Nerd @gidmk.bsky.social · 18/09/2026
It might not be sufficient to trigger editorial action but I reckon it would/will still be quite a scandal.
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Health Nerd @gidmk.bsky.social · 18/09/2026
For some stuff, this won't matter. For scientific research, it really will. Sooner or later, someone is going to run 2024/5/6 etc papers through the leading detection model. I wonder what will happen then?
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Health Nerd @gidmk.bsky.social · 18/09/2026
A thought: current AI writing detection cannot always consistently identify current frontier model writing. HOWEVER, future models will almost certainly be able to identify AI writing from current models. So the chances that someone will get caught using AI without declaring it rises
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Health Nerd @gidmk.bsky.social · 16/09/2026
Me: I'm a serious scientist reading a very serious paper. Also me: FOLLOWING BUTTS
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Health Nerd @gidmk.bsky.social · 15/09/2026
New piece on a great project from @matthewbjane.bsky.social looking at problematic research. Also, extremely worrisome issues in studies of exercise for depression. gidmk.substack.com/p/how-do-we-...
gidmk.substack.com
How Do We Deal With Seriously Problematic Research?
A new solution to a very serious issue
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Reposted by Health Nerd
Matthew B. Jané @matthewbjane.bsky.social · 13/09/2026
I’ve been quiet on social media lately, but today I’m launching Audit Clinical Evidence (ACE), an initiative I’ve been developing over the past year. Take a look: AuditClinicalEvidence.org
auditclinicalevidence.org
ACE
Independent audits of published clinical research for statistical errors, data inconsistencies, and research integrity violations.
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Health Nerd @gidmk.bsky.social · 13/09/2026
Yes it does feel very much like they're trying to say that there was no affiliation without *saying* that
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Health Nerd @gidmk.bsky.social · 13/09/2026
I'm not a lawyer but this seems to be actual crimes?
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Health Nerd @gidmk.bsky.social · 11/09/2026
Yes, he did cite the works that he copied. He still copied them!
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Health Nerd @gidmk.bsky.social · 11/09/2026
The lengths people are going to so that they can pretend Arday was innocent are so bizarre to me. Any student would be failed for copying a single page from someone else, never mind dozens of them at a time.
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