Without realising it, our eating is affected by the person we sit next to.

If it is a really fat person, then we will eat a bit less than them. Their weight serves as a warning to us. But if we sit next to a skinny with a huge portion, then we automatically, without thinking, get the idea that it is okay to pile on the food. This research is from the University of Chicago.

We are affected by all sorts of cues when it comes to eating. The modern environment is full of encouragements to eat. This includes a food ad on the telly (research shows that any food on the telly makes us hungry, even if we have just eaten). Or flicking through a slimming magazine (more talk about and pictures of food in these than you would expect). The sight and smell or popcorn in the cinema. Or passing a restaurant fragrant with cooking smells. And then there is habit. What do you pair your unnecessary eating with. Is it 3pm, a cup of tea and a biscuit? Or in front of the telly with the pringles? Or a glass of wine and a bag of nuts?