Chris van Tulleken 🏳️🌈 engagement report
@DoctorChrisVT - 1.2M followers on X
Measured over 2 original posts from a 30-day window, last computed on October 25, 2026.
Engagement
Early reading. We have captured 2 original posts for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.
A typical post picks up 558 interactions against 1.2M followers, an engagement rate of 0.045%. Posts are seen about 48K times each, and 1.17% of those impressions turn into an interaction. That is about 3.87% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.6 post a day over the last 30 days, though only 30% of days saw any activity at all. Most posts go out around 09:00 UTC, and Tuesday is the busiest day of the week. Of the 2 posts sampled, 50% carry an image or video and 100% link out. The account's strongest tracked post pulled 1.3K interactions, about 2.3x its own typical post. Recurring topics include #cowmilkallergy, #formulamarketing, #infantformula. Only 2 original posts have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.
Measured over 2 original posts from a 30-day window, last computed on October 25, 2026. Recurring tags: #cowmilkallergy, #formulamarketing, #infantformula.
Where this sits in the catalog
At 0.045%, Chris van Tulleken 🏳️🌈 sits above the 25th percentile of the 204,880 accounts in this comparison. That places it in the below the median band, which runs 0.024% to 0.143%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.004% |
| 25th percentile | 0.024% |
| 50th percentile | 0.143% |
| 75th percentile | 0.678% |
| 90th percentile | 2.55% |
| 99th percentile | 82.4% |
This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built
Posting timing
This account posts most often around 09:00 UTC, and Tuesday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 50% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 100% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | +15% | +14% to +16% | 32K |
- 50% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 100% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
- Its average post runs 457 characters, which falls in the over 280 characters band. Across the catalog, posts over 280 characters run 15% above the same accounts' other posts.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Sep 4, 20262.3x their median
The New Dark Ages, my book about the end of reading and what it means for our society is out now! By purchasing it you can help to hold back the spread of the post-literate society (and by refusing to purchase it you will only confirm my thesis!) https://t.co/goCo32gHHw
- Oct 13, 20262.0x their median
It is hard to believe that Helen Branswell has passed away. Just heartbreaking. On January 4, 2020, Helen wrote STAT's first story on a mystery pneumonia outbreak in China. She saw the pandemic coming well before anyone was paying attention. Helen was a journalist who knew more than most of the experts she interviewed. She understood the science, the history and the politics of every outbreak she covered. She asked the hardest (and best) questions and never let me get away with a vague answer Experts learned from her. I certainly did It's hard to imagine a world of pandemics, biological threats and so much more without a Helen Branswell to explain it all. https://t.co/kAanDgu1me
- Aug 21, 2026
"At the show were also seven wholesalers selling chocolate bars, crisps, and sweets, one of which had a display stand full of bags of Walkers crisps, Lucozade, Mars bars, and Kit Kats, with a sign saying “Please help yourself.” Five ice cream firms were present, four soft drinks companies, and other suppliers that make items including pizzas and cake mixes and confectionery vending machines." Incredible investigation of the UK’s biggest school food show by @bmj_latest with @BiteBack2030 - unhealthy food is very much on the menu for kids. https://t.co/s3sI0EcJHy @BiteBack2030
- Aug 17, 2026
BMJ is corrupt. Retracts the Mostert paper in violation of COPE guidelines. So you should put your trust what has been REMOVED from the journals, not what is in the journals.
- Jul 22, 2026
‘If all else fails, sue.’ This is an astounding new report. We know that big food companies deliberately engineer and market unhealthy products so that we eat too much of them, too often. And lots of you will have seen that this is why multiple lawsuits are beginning in the USA. But what you probably didn’t realise is that it isn’t just people who are harmed by unhealthy food who are using the law. The companies who make unhealthy food are doing it too. But on a MUCH bigger scale...🧵 https://t.co/thYzFueJpC
- Aug 22, 2026
“ For decades food companies have employed scientists to work out how to keep you eating without stopping long enough to remember you have a body... …By contrast, the selling point of Magnum’s new ice-creams seems to be they will keep you laser-focused on your own body.” A magnificent piece on ice cream in today’s @guardian by @kitty__drake - one of the best food articles I’ve read. https://t.co/gw7lclxfFH
- Aug 8, 2026
I went for a full body MOT and the results came as a shock https://t.co/CruKm87LVe
- May 4, 2024
If you're building the most sustainable stand-alone home possible what features does it have? Low emodied carbon Solar gain PV Heat pump Solar shading Passivhaus Hot water recovery Rainwater fed toilets/washing machine Recovered materials What about waste water? What else?
- Aug 10, 2026
"It will turbocharge inequality; it is already facilitating a breathtaking shift of power and wealth from the hands of the many to the hands of a tiny number of men who – to put it in terms for which I can’t be sued – seem to hold dangerously damaged views about the value and dignity of human life." Much needed piece by author and academic Katherine Rundell in the @Guardian on the effect of AI on kids. Do we need for the sort of approaches we are seeing with social media and other online harms? https://t.co/Ik1LmRJz78
- Sep 9, 2026
Is it okay to cry at work? "Ultimately, to cry is to be human, and being human is central to being a doctor. Having said that, context is clearly important." https://t.co/HdhOV5QYyZ
Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.
Recurring topics
The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.
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Reading these numbers
A typical post picks up 558 interactions against 1.2M followers, an engagement rate of 0.045%. Posts are seen about 48K times each, and 1.17% of those impressions turn into an interaction. That is about 3.87% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.6 post a day over the last 30 days, though only 30% of days saw any activity at all. Most posts go out around 09:00 UTC, and Tuesday is the busiest day of the week. Of the 2 posts sampled, 50% carry an image or video and 100% link out. The account's strongest tracked post pulled 1.3K interactions, about 2.3x its own typical post. Recurring topics include #cowmilkallergy, #formulamarketing, #infantformula. Only 2 original posts have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.
- What is Chris van Tulleken 🏳️🌈's engagement rate on X?
- Chris van Tulleken 🏳️🌈 (@DoctorChrisVT) has an engagement rate of 0.045%, based on the median interactions across 2 original posts from the last 30 days against 1,230,766 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.045%, Chris van Tulleken 🏳️🌈 sits above the 25th percentile of the 204,880 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
- Does @DoctorChrisVT have real engagement?
- There is not yet enough sample to rank this account against others of its size.
- When does @DoctorChrisVT post?
- Most posts go out around 09:00 UTC, and Tuesday is its busiest day, at roughly 0.6 posts per day across the measured window.