This week Barney and Eve discuss the controversy that continues to rage around ultra-processed foods, and examine the truth about extraordinary claims that scientists are paid off by junk food companies to cover up the truth: that they're as harmful to our health as tobacco. They also speak to Kings College London psychiatry expert Professor Carmine Pariante and psychologist Kimberley Wilson about research that seems to show ultra-processed food has an impact on mental health. 

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