The concept of the high-protein, low-carb diet has been around for a while. These diets increase protein intake while dramatically decreasing the amount of carbohydrates you consume. One of the most famous diets of this type is the “Zone diet”. Dr. Barry Sears used the concepts behind this practice to engineer a diet that increases protein intake by 30% while reducing carbohydrate intake by 40%. At first, during the initial weeks of maintaining this diet, you can lose weight rapidly. However, after a few weeks the weight loss speed will decline by a large margin.
This diet is very comfortable to work with at first. Over time it becomes more difficult, however. This is due to the fact that the body is low on energy due to its lack of carbohydrate intake. This can lead to apathy, decreased work capacity, depression, and a sense that nothing has changed. You may end up gaining the weight back by simply loosing interest in the diet due to how limited your dietary choices.
All diets are useful and can work for most people on a short term scale. That is the key word to emphasize, short term. You should only use diets that go to extremes on the protein or carbohydrate scale if you wish to lose weight quickly. However, these diets are also part of the trend of yo-yo dieting. You will lose weight fast but can regain it fast as well.
According to American researchers, the Atkins diet reduces body weight by 3.9% in one year, the Ornish diet decreases it by 6.2%, and the Zone decreases it by 4.6%. Overall that is a great deal of hardship with little lasting result. It is definitely not what you need for a balanced and healthy lifestyle option.