The body's own brake on inflammation - and a drug that helped it work
What happened
Researchers at University College London have described a natural 'off switch' that helps the body stop inflammation once it has done its job. The work was published in the journal Nature Communications on 12 September 2026. UCL led the study. Teams at King's College London, the University of Oxford, Queen Mary University of London and the National Institute of Environmental Health Sciences in the United States worked on it too. The switch involves small molecules the body makes from fats. They are called epoxy-oxylipins. The team found these molecules help shut inflammation down and stop harmful immune cells building up. The researchers then tried to give that switch a nudge. They used an experimental drug called GSK2256294. It blocks an enzyme with a long name, soluble epoxide hydrolase, usually shortened to sEH. That enzyme breaks epoxy-oxylipins down. Block the enzyme, and levels of the protective molecules go up. Forty-eight healthy volunteers took part. Twenty-four were given the drug before inflammation was triggered. Twenty-four were given it afterwards. The first author was Dr Olivia Bracken, of UCL's Department of Ageing, Rheumatology and Regenerative Medicine. The senior author was Professor Derek Gilroy, of UCL's Division of Medicine.
Why this matters
Inflammation is not the enemy. It is how your body deals with injury and infection. Redness, heat and swelling are signs that your immune system has turned up to do a job. The trouble starts when inflammation does not switch off again. Long-running inflammation is linked to a long list of conditions, including arthritis, heart disease and several bowel conditions. Most medicines we have now work by damping inflammation down. Steroids are the obvious example. They do work. But used over long periods they can cause real side effects, and people often have to weigh one problem against another. This research points at a different idea. Instead of blocking inflammation from starting, you help the body finish it properly. Scientists call this 'resolution'. It is a fairly new way of thinking about immune conditions, and a lot of serious research groups are now working on it. That matters because it could mean treating inflammatory illness without switching off the whole immune system. You would still be able to fight infection. You would just stop the fire burning after the danger has passed. It is a good idea. Whether it becomes a good medicine is a separate question.
What the evidence actually says
Here is where it pays to slow down, because the headline is more exciting than the detail. This was a small, early study. Forty-eight volunteers is enough to show that something real happens in the body. It is nowhere near enough to show that a medicine treats a disease. The volunteers were healthy. Inflammation was triggered deliberately, under controlled conditions. That is not the same as someone who has lived with rheumatoid arthritis for twenty years. So what did the drug do? It sharply reduced the number of 'intermediate monocytes' found in both blood and tissue. Monocytes are a type of white blood cell, and this particular type is linked with inflammation that drags on. Pain also settled more quickly in the treated groups. What it did not do matters just as much. The drug did not significantly change the visible signs. Redness and swelling looked much the same. The team also worked out part of the mechanism. One molecule, 12,13-EpOME, appears to suppress a signalling pathway called p38 MAPK. That pathway helps turn ordinary immune cells into more damaging ones. So: a real effect, carefully described, with a plausible explanation behind it. Not a treatment. Not yet, and not soon.
Practical advice
There is nothing in this study that should change what you do today. But a few sensible things are worth holding on to. If you take an anti-inflammatory medicine, keep taking it as prescribed. Do not stop, skip or change a dose because of a news story. The drug in this study is experimental and is not available to patients. If you live with a long-term inflammatory condition, the things that already help still help. Keep moving within your limits. Protect your sleep. Stopping smoking makes a measurable difference to inflammation, and your pharmacy can help you do it. If your pain or swelling changes, or a flare lasts longer than it usually does, speak to your GP or pharmacist rather than waiting it out. A medication review costs you nothing and can pick up problems early. And when you read about a 'breakthrough', ask one question first: how many people were in the study, and were they patients or healthy volunteers? That single question will tell you most of what you need to know.
What to know
Researchers at UCL have found molecules, made by the body from fats, that help switch inflammation off. An experimental drug that raises their levels reduced harmful immune cells and helped pain settle faster in 48 healthy volunteers. It did not change redness or swelling. This is early-stage research, not a new treatment. It adds weight to a growing idea: that helping the body end inflammation properly may be better than simply blocking it. Keep taking your prescribed medicines. Talk to your pharmacist or GP if something changes. Sources: ScienceDaily, 'Scientists Discover a Hidden Switch That Shuts Down Inflammation', 12 September 2026, https://www.sciencedaily.com/releases/2026/09/260911214306.htm ; Nature Communications, study by Bracken and colleagues at University College London, 12 September 2026, DOI 10.1038/s41467-025-67961-5, https://doi.org/10.1038/s41467-025-67961-5 This article is for general information and does not replace advice from a doctor, pharmacist or other qualified healthcare professional. Never stop or change a prescribed anti-inflammatory medicine without speaking to your clinician or pharmacist first.
Related articles
A new lung cancer drug beat the current standard on survival. Here is the detail
Results from a large lung cancer trial were presented on 12 September 2026 at the World Conference on Lung Cancer, run by the International Association for the…
A two-minute test that tells you whether laser surgery for reading vision will suit you
Research presented at the 44th Congress of the European Society of Cataract and Refractive Surgeons has found that a simple, quick test can predict whether a pa…