An environmentally and socially sustainable food system can only be achieved through a transformation of the way foods are produced, consumed and traded.

New UN report cites Cambridge Judge sustainability research

12 December 2025

The article at a glance

Four studies co-authored at the El-Erian Institute of Behavioural Economics and Policy at Cambridge Judge Business School are cited in a new United Nations report on the global environment. The report – entitled the Global Environmental Outlook, 7th edition: A Future We Choose – cites the El-Erian research in an extensive chapter on food systems.

Lucia Reisch.
Professor Lucia Reisch

“An environmentally and socially sustainable food system can only be achieved through a transformation of the way foods are produced, consumed and traded,” says the report.  

“This chapter explores solution pathways for building a transformative food system, from food production to consumption, and back again, capturing the full cycle from ‘farm to fork’. It examines necessary transformations – for crops, livestock and fisheries – alongside dietary changes, including plant-based foods and novel alternative proteins. The chapter also highlights the key roles of governance, education, circular economic approaches, food distribution and marketing, all withing the context of adapting to environmental and social change.” 

Lucia Reisch, Director of the El-Erian Institute, is a Contributing Editor to the report, which was launched on 9 December at an event in Nairobi, Kenya.

The cited El-Erian studies cover consumer behaviour and policy choices 

The El-Erian-linked studies cited in the report explore: 

1

Supermarket settings

Behavioural innovations in a supermarket setting to nudge customers toward more sustainable grocery purchases.

2

Food delivery apps

How choice architecture promotes sustainable choices in food delivery apps such as Just Eat and Deliveroo.

3

Food production

Contemporary issues and policies in sustainable food production, including various policy interventions such as information-based instruments, market-based initiatives, direct regulations and nudges.

4

Reducing greenhouse emissions

The need for consumers to switch to more plant-based diets and to waste less food in order for food systems to reduce their greenhouse gas emissions.

A simple choice for humanity, says UN Environment Programme head 

“The Global Environment Outlook lays out a simple choice for humanity: continue down the road to a future devastated by climate change, dwindling nature, degraded land and polluted air, or change direction to secure a healthy planet, healthy people and healthy economies. This is no choice at all,” says Inger Andersen, Executive Director of the UN Environment Programme. 

“And let us not forgot the world has already made so much progress: from global deals covering climate change, nature, land and biodiversity, and pollution and waste, to real-world change in the booming renewables industry, global coverage of protected areas, and the phasing out of toxic chemicals. I call on all nations to build on this progress, invest in planetary health and drive their economies towards a thriving, sustainable future.” 

This article was published on

12 December 2025.