[jaggederest]

If you're at 12% body fat, the ratio will be about 3:1 lean to fat loss[1] unless you're working out very, very hard and eating a ridiculous amount of protein (1+g/kg)

You'll need to work out a lot and be very careful with how much of a deficit you're running if you want to isolate fat instead of just reducing total body mass.

[1]http://www.nature.com/ijo/journal/v32/n3/full/0803720a.html

[Scene_Cast2]

I just want to point out that (1g protein / 1kg body mass) is high, but not a ridiculous amount for someone doing lifting. The rule-of-thumb number I've seen quoted a lot is (1g proten / 1 lb body mass), or in metric, (2.2g protein / 1kg body mass), as the maximum useful intake.

[jaggederest]

1g/kg is at least double what most people eat :) it's ridiculous from a general population standpoint. Personally I aim for more than that, but I'm not sure it's indicated for people who don't work out.