It's still possible to lose weight while eating only carbs (i.e. potatoes) . Your body needs a certain amount of nutrients to power itself and will take whatever it needs to keep yourself alive. http://www.livescience.com/10163-man-eat...nths.html. You will feel terrible because you don't have a good balance of nutrients and macro nutrients in your body.
However, proper macro nutrient rationing is more effective for running your body and regulating your bodies functions and hormornes (ie. 40% protein calories, 30% fat calories, 30% carb calories. some people work better on slightly different ratios)
When you're not eating at all (fasting for long periods of time) it starts to use your fat stores for fuel.
Problem is, carbs are the least satiating macro. Ever been through a bag of potato chips and then got hungry two hours later? Protein and fat keep you feeling much more satisfied when you eat.
However, proper macro nutrient rationing is more effective for running your body and regulating your bodies functions and hormornes (ie. 40% protein calories, 30% fat calories, 30% carb calories. some people work better on slightly different ratios)
When you're not eating at all (fasting for long periods of time) it starts to use your fat stores for fuel.
Problem is, carbs are the least satiating macro. Ever been through a bag of potato chips and then got hungry two hours later? Protein and fat keep you feeling much more satisfied when you eat.