Professor Wansink said: ‘We found a really strong tendency towards the food which is visible. If you put your least healthy food at the front of the cupboard or refrigerator, that’s the one you are most likely to eat.

‘You are much less likely to eat the fifth or tenth item you see when you come home tired from work.’

He added: ‘We have previously found if you have 30 cans of soup at home, you will eat more soup than if you just have ten.