A friend and I had mild cases of food poisoning a few years ago in the backcountry a few years ago...it was no stinking fun. It was much different feeling than AMS.
My friend had never had any AMS issues in the past and so didn't have anything to compare it to. I've felt a little nauseous possibly due to AMS, but in general I'm just not interested in food above 11k or so in most cases.
As a side note, I lost 8 lbs last week due to the GI bug. Our babysitter, who saw my family near the beginning of the week is dealing with it now.
