I know you werent addressing me, but I just had to chime in.

High fat, low carb is a healthy way of eating, and just because you arent overweight has no bearing on whether you should eat that way or not.

I personally dont follow a specific plan, however I do eat low carb, very high fat (no hydrogenated or rancid fats though), and i started eating this way to improve my health in general. Not just to lose weight. Nearly all of my health problems have either improved loads, or gone away entirely. Also since it is a healthy way to eat it can prevent many health problems from occuring in the first place.