A liquid-only diet for Crohn's: what a 2026 review says about exclusive enteral nutrition in adults

Crohn's disease is a long-term condition where parts of the digestive system become inflamed. The aim of treatment is fairly consistent even when the specifics differ from person to person: calm the inflammation, bring on remission, then try to hold onto it [1].

One of the options for bringing on remission doesn't involve a drug at all. It's called enteral nutrition — and in its strictest form, exclusive enteral nutrition (EEN), it means a liquid-only diet that supplies complete nutrition for a set period instead of normal food. This is not a fringe idea. Authority guidance describes it as an established approach, though it notes it is more commonly used in children and young people [2]. That last detail is the quiet centre of this story.

A 2026 systematic review and meta-analysis in the Indian Journal of Gastroenterology set out to look specifically at the group that gets talked about less here: adults. It pooled both randomized trials and real-world studies of EEN used to induce remission in adults with active Crohn's, and reports that EEN can induce remission in a meaningful proportion of them [3].

It's worth slowing down on what kind of evidence that is. This is a systematic review and meta-analysis — it gathers existing studies and combines their results — and, importantly, it deliberately includes real-world studies alongside randomized trials, not randomized trials alone. That breadth is useful and also a caution: the authors themselves underline that the adult evidence base is smaller and more mixed than the well-trodden paediatric evidence, and that the real-world limitation is a human one — living on an exclusively liquid diet is hard, and adherence and palatability shape whether it works at all. In their framing EEN sits as a clinician-supervised option that is still being defined in adults, not a diet anyone should start on their own [4].

So the honest summary is two-sided, and both sides matter. On one side: this is a real, evidence-backed, drug-free route to inducing remission, not a wellness trend — and the 2026 review suggests it does something in adults, not only children. On the other: "does something in a meaningful proportion" is not "works for everyone," the adult evidence is thinner than the paediatric story it's often borrowed from, and the hardest part may not be the science but the weeks of formula-only eating that the science assumes you can sustain.

If you're living with Crohn's and this is the first you've heard of feeding the gut only formula to calm a flare, the useful move isn't to try it — it's to know it exists and to ask. Whether EEN fits your situation, in what form, for how long, and with what support to actually get through it, is a conversation for your gastroenterologist or IBD dietitian, with your history in front of them. We're not here to tell you what to do; the sources are clear that this is a supervised treatment decision, not a diet to improvise.