It's the reduced caloric intake that does it, not the specifics of the diet. But also > Patients are given low-calorie meal replacement products such as soups,

It's the reduced caloric intake that does it, not the specifics of the diet. But also > Patients are given low-calorie meal replacement products such as soups, milkshakes and snack bars for three months Something that goes below the radar is adherence - when someone else provides you with every single meal, sticking to a diet is much easier compared to when you're on your own and every meal is a choice that you make. It would be interesting to know how many people go back to their old habits once the program ends.