Uh, yeah... There *really* is a price to pay, I confirm it. I don't know if it's a good thing (it encourages us to not cheat too much) or a curse. I'll go with the good thing, because I like tothink positive like this.
I particularly remember one evening, last summer, where I got a real scare. I had spent the afternoon at friends', and one of them had brought a home-made chocolate cake. A delicious one. More than delicious. Delicious as in, it was the first time in my life, I think, that I was going on eating even though I was starting to feel sick to my stomach. I don't know if it was all that sugar or all that chocolate or both, but in the evening, when I arrived home, I went into what a very weird moment, something I had never experienced before -- mild nausea, cold sweats, headache, trembling hands... I've never eaten so much chocolate cake or sugary stuff again since then. Yuck!