but there is one set of findings that suggest if you're eating unhealthy food - crisps, snacks, biscuits - if it's put in a red bowl or a red plate, then you'll be likely to eat less." ...

He said: "Snack foods - unhealthy stuff on a red plate - you end up eating a little bit less because it's that red colour on a plate where it seems to trigger some sort of danger or avoidance signal.

But what role do supermarkets play in persuading us to buy unhealthy foods and how can you resist the temptation? If you often go to the shops armed with a carefully curated list, only to head ...