If you ask me its a comlplete NO NO. It aids weight loss for sure but you lose other things as well. For protein to work as it is supposed to for growth, repair, maintenance, gene expression, the body should get its supply of carbohydrates and fat. Without these nutrients , protein is a waste.
When too much of protein is consumed at one time, it doesnot get stacked away for future use, instead it is converted to fat by process called deamination. It will just load the liver where it will get broken dowm to glucose
Whatever source you choose, veg or non veg or a supplement, without a balanced diet , protein by itself will only lead to irritability, sleeplessness, constipation, mood swimgs and muscle wasting.
High protein diet does lead to weight loss- When the body is given only protein and very little or no carbohydrate, the body first gets rid of its glycogen stores (glucose or sugar stored in the liver and muscles) and loses water. After that, it actually attracts the muscle tissue itself, burning the amino acids for energy. The result is muscle catabolismand lean masss loss. Accordingly, regular exercise and a smart use of carbohydrates in the diet lead to protein sparing.