Less than the RDA of protein, calcium, potassium and vitamins, so expect to feel tired.
A very low calorie intake, which borders on dangerous.
This diet is high in fats and cholesterol, which will weaken the cardio-vascular system if followed for long periods of time.
As for many quick-fix diets, the weight you lose (and more) will come back on just as quickly once you have reverted to your old eating habits.