When this happened to me, the only remedy was to increase my carbs by 5/day. Cleared it right up. I never go below 30 carbs anymore and I have not had the total appetite loss problem again...although I do still get full quickly, even on my favorite foods.

I read somewhere--maybe on the low-carb newsgroup--that in some people, one of the brain centers that processes ketones is right next to the main center for nausea, and that therefore if certain people went into too deep a ketosis, they would not have an appetite and some of them would even feel nauseated.

I don't know how true that is, but if it were true it would explain what happened to me. Just thought I'd put that out there as a possibility.

Emily