The LowEnergy website is the Weight Loss version of the P:E Diet, so yes, fat is reduced where it can be such as using low fat yogurt, cheese and leaner cuts of meat. This version still includes Whole Foods such as salmon, shellfish, whole eggs, chicken, and many vegetables.

If you are at your ideal weight, then you can use any food on the P:E diet ratio......avoiding sugar, refined flour and refined vegetable oil, anything that has High Energy Density and lies in the Fat Gain segment of the calculator. Full fat 5% yogurt has a P:E of 1.1 so that's great, but if still wanting to lose weight 0% or 2% yogurt helps toward that goal.

http://www.burnfatnotsugar.com/MacroCalc.html