Weighing in here (yes, pun intended)
I'm a low-carb/slow-carb kinda gal. Basically doing Atkins (and I still keep it WAY low, like under 30 carbs a day, never more than 35 carbs, and I just past the 11 week mark). But, once a week, I spike my carb intake on purpose (a "cheat day") so my body doesn't adjust to thinking it needs only 30 carbs a day, and sets that as "normal". In fact, weekly Friday is my cheat day, and I usually get a lg hot mocha to drink (over 70 carbs in a 20 oz alone). So far, even cheating with a big carb push (well, that's still low carb considering what the world thinks it "normal"), I still lose weight. This is the third week trying it this way (recommended by another low-carber here at 3FC) and each week, esp if I'm sorta stalled at a certain weight for days on end, the net weight loss for this period of time is about 3.8# (actually, my cheat day here signals the end of "week two", so it's not really three weeks, just ending two weeks). Hey, I'll take it! Average of almost 2# a week loss would be over 100# in a year with a weekly day to eat however many carbs I wanna.
Just wanted to share....

Suzanne/MrsKevin