Chris Kresser and Stephan Guyenet did a podcast on the food reward system:http://thehealthyskeptic.org/the-healthy-skeptic-podcast-episode-10
One of the things they'd like to know about is the long-term effects of SLD. I know I did it for years and then stopped somewhere in 2010. I've stayed in the 170-180 range since a low of 164 early in 2010. I'm not sure, though, how one would really be able to distinguish between the benefits of SLD and the benefits of paleo, for SLD made my appetite low enough so that I could choose to do paleo. So, there might be some sort of problem with, for instance, taking poly-unsaturated oils (which was one of the reasons I stopped- I'm also at a good weight, though I occasionally think about getting into single digits %fat), but the improvements SLD allowed me to make probably makes up for that.
How many people actually keep everything else exactly the same? Haven't most of us combined SLD with other ideas, like lo-carb, paleo, and even veganism?