Hi. Honestly you may not want to hear this but it really is not healthy to eat carbs alone or protein alone. Your body needs all of the basic food groups. Yes there are all carb diets and yes you will put off weight really quickly and all of that but all those crazy diets will tell you that you can only do them for a short period of time. This is because they are unhealthy and as soon as you stop the diet you will put that weight back on and then some. What you need to do is eat a well balanced diet.