Move To Sustainable Food Systems Could Bring $10tn Benefits a Year, Study Finds

Existing production destroys more value than it creates due to medical and environmental costs, researchers say

A shift towards a more sustainable global food system could create up to $10tn (£7.9tn) of benefits a year, improve human health and ease the climate crisis, according to the most comprehensive economic study of its type.

It found that existing food systems destroyed more value than they created due to hidden environmental and medical costs, in effect, borrowing from the future to take profits today.

Food systems drive a third of global greenhouse gas emissions, putting the world on course for 2.7C of warming by the end of the century. This creates a vicious cycle, as higher temperatures bring more extreme weather and greater damage to harvests.

Food insecurity also puts a burden on medical systems. The study predicted a business-as-usual approach would leave 640 million people underweight by 2050, while obesity would increase by 70%.

Redirecting the food system would be politically challenging but bring huge economic and welfare benefits, said the international team of authors behind the study, which aims to be the food equivalent of the Stern review, the 2006 examination of the costs of climate change.