I have lost up to 3.5 pounds during the night. Needless to say, its a night I'm up peeing quite a few times.

I think another reaction people have is, "I'm going to cut out this bad thing, this bad thing and be more careful". They end up cutting several things out of their diet and end up cutting back on calories by a fair amount. Then they start losing weight again. Was their weight loss because of what they cut out? Well.... sort of. It combined with everything else they were eating was too many carbs or too many calories or both.