The benefit would be most felt in low to middle-income countries, according to researchers.
Swapping red meat for small fish such as anchovies, sardines and herring could reduce global disease levels and save up to 750,000 lives a year by 2050, according to a study.
The remainder, including a significant amount fished from the coasts of countries experiencing malnutrition and food insecurity, are turned into fishmeal and fish oil, which feeds more expensive farmed seafood, such as salmon and trout. Chronic diseases accounted for about 70% of all deaths worldwide in 2019, researchers said, with heart disease, bowel cancer, diabetes and stroke causing almost half of the figure.The team projected red meat consumption for the coming decades in 137 countries and estimated the availability of forage fish as a substitute for red meat by 2050 using historical fishing data.
For the UK, the study suggested that replacing 8% of red meat intake with forage fish in 2050 could prevent 10% of heart disease deaths, while reducing deaths from stroke, diabetes and bowel cancer by 1-2%.
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