Spinach diet which the British beauty followed for five months is dense in fiber, proteins, vitamin K, vitamin A, folic acid, phytonutrient and antioxidant, but at the same time, it is acutely lacking in nutrients. Except for green veggies, all other foods are restricted in the program.

That being said, no single food in entire world can provide you overall nourishment. Your body requires all kinds of foods to get adequate nourishment. Moreover, your body requires energy to meet day to day activities which green veggies are unable to provide you.

Generally low calorie diet plans point up consumption of protein rich foods because protein keeps you full for longer. However, amount of protein have to be very limited, else you are likely to develop kidney stones, constipation, hair fall etc.

There is nothing wrong if we call spinach diet a fad diet. You might get transient weight loss gains, but in long run, you will be doomed to retrieve all the lost weight with degraded health.