Photo: Joanna Stołowicz on Unsplash.
Cutting red and processed meat in half and eating more vegetables and legumes in its place could prevent an estimated 4.5 million cases of chronic disease in the UK over 30 years, according to a new modeling study in the European Journal of Nutrition.
The same swap could add an estimated 9.4 months to average life expectancy. And here's the part we love: about three quarters of the gains came from eating more plants, not just from eating less meat.
The study was led by Dr. Patricia Eustachio Colombo of Karolinska Institutet in Sweden and the London School of Hygiene & Tropical Medicine (LSHTM), with senior author Rosemary Green of LSHTM and colleagues from Oxford, KTH, the Technical University of Denmark and the University of Gothenburg. It was published online on September 17, 2026, and is free to read in full.
The team tested the meat targets drawn up by the UK's Climate Change Committee, a 35% and a 50% cut. Using national diet survey data, they simulated how adults would respond to public information campaigns combined with taxes on meat and subsidies for vegetables, legumes and meat alternatives. A life-table model then estimated the health effects over 30 years, using risk figures from the Global Burden of Disease study.
In the 50% scenario, the model estimates 3.3 million fewer cases of heart disease and stroke, 1.1 million fewer cases of type 2 diabetes and about 72,000 fewer cases of colorectal cancer, plus 10.9 million extra years of life. Even the 35% cut could avert an estimated 3.4 million cases and add 7.2 months of life expectancy.
The plate behind those numbers is very doable. In the central 50% scenario, men eat about 43g (1.5oz) less red and processed meat a day and gain about 83g (2.9oz) of legumes and 243g (8.6oz) of vegetables. Think bean chili instead of every other burger. The authors spell out why it matters:
These comparisons illustrate how modelling choices can influence health impact estimates across outcomes, and more importantly highlight that the health benefits of reducing meat consumption are not solely determined by eating less meat, but also by what people choose to eat instead.
This is a model, not a trial, and the authors are clear about it. They call the figures "exploratory scenario estimates rather than predictions of real-world outcomes," and the uncertainty ranges are wide (from 0.6 to 8.1 million cases averted in the 50% scenario). The model assumes the whole population changes evenly, it didn't count any benefit from meat alternatives because long-term evidence is still thin, and it didn't model nutrients such as iron and vitamin B12, though the authors point to earlier work showing well-planned plant-forward diets can meet those needs.
The direction matches what we've seen for years. An Oxford team put the health costs of red and processed meat at $285 billion, a healthy plant-based diet was linked to lower risk of multiple chronic diseases in 400,000 adults, and countries eating more plant protein have longer adult life expectancy. UK shoppers are already on it, too, swapping meat for beans as tempeh sales soar 71%.
This article is for information only and is not medical advice. Talk to your doctor before making major changes to your diet.
More beans, more veg, more life. Pass the chili.