People with ADHD are more likely to have lower levels of omega-3 fatty acids, which are crucial for healthy brain function. This led to fish oils being tested as a possible treatment - but results have been very mixed. Consultant psychiatrist Prof Carmine Pariante from King's College London talks to Jane Garvey about why they work for some people and not others. She's also joined by Prof Ilina Singh of Oxford University, who reveals what children with ADHD think about using medication to control their symptoms.