There is no universal diet and there won’t be any. The right choice of diet depends on understanding hormones, genes and psychology. These things play a key role in our relationship with food. Some people tend to eat too much because of their individual characteristics, The Daily Mail reports.

Specialists identified three broad groups: ‘feasters’ who keep on eating because they never feel full (because of the less release of hormone known as GLP1, which tells your brain you are full) ‘constant cravers’ who can’t stop thinking about food (because of ‘obesity genes’ ) and ‘emotional eaters’ who eat when they are unhappy. It turned out, that each group responds differently to different diets.

This theory was tested on 75 volunteers – 25 from each group – over three months.

 ‘Feasters’ were given a diet designed to stimulate gut hormone levels with high-protein foods such as meat, fish and cut out carbohydrates such as white bread and potatoes.

‘Constant cravers’ were put on a version of the 5:2 diet, eating no more than 800 calories for two days every week. They could eat what they liked for the other five.

‘Emotional eaters’ need social support and not food.