I can most certainly tell that most people (unless the ones with extreme willpower) will just start craving after their week of fasting. They have felt hungry all the time while they have been injecting their body with simple sugars.
You haven't done it, so you don't know what you are saying. The only craving you might have is one for
fruit which is a critical part of any healthy diet. And you aren't "injecting your body with simple sugars". Are you telling me that you don't drink juice as part of your diet? I'm not talking about "juice cocktails", I'm talking about 100% real actual fruit juice, and like I already said, you aren't drinking gallons of it, you can have a glass if you really cant take just water and nothing else. 20g in a typical glass of orange juice is 1/6 of the recommended daily carbohydrate intake and when you aren't eating, every bit of that is burned, not converted to fat. Your body does not convert carbohydrates to fat when it is already breaking down fat for fuel!
But if you are so concerned that you will become a mainlining sugar addict, then
don't drink the juice, drink the skim milk or man up and stick with just water like I do.
When you break your fast, you don't consume a 2000 calorie cheesburger and fries with an ice cream milkshake. That destroys the whole purpose of doing it in the first place (and it would very very likely make you puke anyhow). You start with the basics and slowly add the healthy ingredients to your diet, and
juice is part of a healthy diet and a far better habit than reaching for a candy bar or soda.
If it's correct what you say you will stay away from fast foods, but you will have brought your body in a state that is absolutely not optimal for losing weight.
There is only
one way to lose weight. Calories burned > calories consumed. That's it. Everything else is mumbo jumbo or about a healthy diet, which is WAY important, but unrelated to actually losing weight.