Professor Michael Crawford: A Life through Food

June 20, 2025·43 min·4 clips

Professor Crawford found that brain chemistry is identical in all mammals, pointing to omega-3's crucial role in human evolution.

A supermarket label is the way in. The programme starts with omega-3, not as a health aisle buzzword, but as an essential fatty acid the body cannot make. Then the question gets sharper. Could eating less fish, shellfish, leafy vegetables, and naturally reared meat have something to do with depression, or even with becoming stupider? Professor Michael Crawford is the central voice. Now in his 90s, he comes across as a scientist who has spent the last 50 years making uncomfortable claims about food and the brain. His case keeps returning to marine food. He argues for food from the sea and fresh waters as brain food, and says intake can rise without wrecking the planet. Then he goes bigger. Crawford connects human brain development to coastal living, using cranial capacity from early ancestors through Hertel and Cro-Magnon populations. It is a striking claim. He says the brain has shrunk, and points to agriculture and movement away from coastal regions as a possible turning point. The host does not oversell it. Crawford's theory is treated as one alternative hypothesis, not as settled fact. Dr Anneli Lofsted then pulls the episode into the present. A postdoctoral researcher at the Smith School of Enterprise and Environment at the University of Oxford, she studies the UK seafood supply chain. Her numbers puncture the island-nation story. The UK is a net importer of seafood, she says, and mostly eats five familiar species: cod, haddock, salmon, tuna, and prawns. The Big Five dominate, which raises awkward questions about what the UK catches, exports, imports, and actually needs for health. Food ends up carrying a lot here: brain health, sustainability, and the future of food systems.

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