Dan Lewer

@louismosley Hi Louis. I just looked at the study. It's an interrupted time series with no control and less than a year of pre intervention data.

7/7 Read the peer-reviewed study the BMJ seems to be attacking but refused to link. Judge for yourself. Lammila-Escalera et al., BMJ Health Care Informatics, 12 March 2026: informatics.bmj.com/content/bmjhci…

When your doctor prescribes a treatment, the evidence behind it was probably published in a journal like the British Medical Journal, or BMJ for short. The BMJ proved smoking caused cancer. It pioneered the randomised controlled trial. It is one of the four most cited medical journals on earth. This week, it published a piece that betrays that. A thread on the fall of a great journal. 🧵

@danlewer, @tdbrothers and colleagues explain why risk factors for health outcomes shouldn't be studied by putting several independent variables into a regression model and identifying which are statistically significant in a new Methods Primer. bit.ly/3JC6G7u

Among people who use heroin, tobacco smoking and illegal drugs cause a similar number of premature deaths buff.ly/tIC0Fqp @danlewer @TattanBirch @Sharon_ACox

📷 We did some life table modelling among people who use heroin. Tobacco smoking causes as many premature deaths in this group as illegal drugs. Yet public health policies overlook smoking: onlinelibrary.wiley.com/doi/full/10.11… New research with @Sharon_ACox and @TattanBirch

@JAMAOnc Isn't this mostly changing/improved diagnostic practices and screening?

Viewpoint: The rise in early-onset cancers in individuals under 50 may be explained by accelerated biological aging, with aging and cancer sharing common mechanisms. ja.ma/3Hdx1Hb

Authors include @pwidpride, @tdbrothers, @VivProf, and others who probably already left Twitter

(5) My favourite find was the article "Treatment of hospitalized narcotic addicts" from the Illinois Medical Journal, 1970. archive.org/details/imjill…. This deserves an essay of its own

We've just published a scoping review of projects that aim to improve opioid agonist therapy (eg. methadone) in acute hospital settings: This journals.plos.org/mentalhealth/a…. This is part of our excellent iHOST project (lshtm.ac.uk/research/centr…). A couple of findings ...

@JanekirbyPA @PA Thanks, that would be great, I don't think I can DM you, but if you DM me I'll give you my email address.

@danlewer @PA Thanks for your message. The analysis is by NHS England, I requested the figures from them. I have the figures but not the coding information. Email me if you’d like what I have

My analysis for @PA on hospital admissions due to a lack of vitamins. In today’s Guardian, Mirror, Telegraph and Times, plus online theguardian.com/society/2025/j…

@elonmusk You seem like a very unhappy person

In most cases, the word “homeless” is a lie. It’s usually a propaganda word for violent drug addicts with severe mental illness.

@bmj_latest If it sounds too good to be true it probably is. Before you stock up on dark chocolate read this response from @mendel_random ieureka.blogs.bristol.ac.uk/2024/12/04/dar…

Please do find me at @danlewer.bsky.social

Inflation is usually measured the change in prices compared to one year previously. Therefore, a reducing but still positive inflation figure often means REDUCING pricing month-on-month. A positive inflation figures does not always mean prices are going up.

Let's talk about the "5%" model. You just can't contribute meaningfully to a research project with 5% of your time. If you have 20 parallel projects, you literally just go to meetings and do nothing.

@PabloVidalRibas I follow this logic too, but I also wonder what we're paying the journals for

Yes, the system is broken & needs solutions (eg. pay referees most cited, but there are more). I am an author and a reviewer too, I hear you. I am not the journal. As for now, If I keep submitting, I will also keep reviewing. I don´t think it´s fair to just play the 1st part.

I am editor in a journal. The last time a reviewer accepted my invitation to review was June 29. Currently, I have a ms with 22 invitations (I´ve had more), none accepted. Is it just me? Am I the only one reviewing ms for everyone else? (And yes, I came here to complain)