My research focuses on the links between diets, the environment and human health, and I also have an interest in developing new methods and models to study these relationships.

I currently work on the Sustainable and Healthy Food Systems (SHEFS) programme, funded by the Wellcome Trust Our Planet Our Health programme to explore relationships between food systems, the environment and health in India, South Africa and the UK. I also work on the GCRF South Asia Nitrogen Hub, researching links between nitrogen flows and human health through food, water and air pollution, the AMPHoRA project researching actions to reduce air pollution from agriculture in the UK through dietary change, and the FACE-Africa project exploring agricultural adaptations to climate change in The Gambia.

I am the co-PI (with Professor Andy Haines) of the Lancet Pathfinder Commission, which aims to find pathways to a healthy zero-carbon future and communicate them to national and regional decision-makers around the world. In 2020 I was a member of the scientific panel for the UK Citizens Assembly on Climate Change.