I eat low carb and count calories.
If you would like to read the science of how proteins, fats, and carbohydrates are metabolized for yourself, there are some good books such as
Good Calories, Bad Calories by Gary Taubes.
Here are a few websites that might be of interest:
http://www.second-opinions.co.uk/
http://www.paleonu.com/
http://high-fat-nutrition.blogspot.com/
http://wholehealthsource.blogspot.com/
The biochemistry of how macronutrients are metabolized is fascinating. I went low carb due to reading about this biochemistry.
Someone can sincerely believe in something which may or may not be true.
The science won me over, rather than anecdotal reports, even though those can be of use and are sometimes rather compelling.
Hope this is of some use.
