In Edinburgh we have recently been enjoying the globally renowned International Festival, the Fringe, the Festival of Politics, the Book Festival and a huge number of additional festivals. The city has been awash not just with sunshine (this week at least!) but with debates, discussions, comedy and performance.

Consumers are used to mixed messages about diet and health. Red wine can be good in moderation, or perhaps not. Dark chocolate is good for you, or perhaps not.

The confusion has gone into overdrive recently, with the report published by the National Obesity Forum and the Public Health Collaboration, calling for the public to eat fewer low fat foods and stop calorie counting, with a greater emphasis on whole foods and more healthy fats.