Haven't vomited in about the past year and a half or so, and during that time I've been smoking anywhere between half a gram and 3 grams a day, of varying quality and strains. (Was smoking an 8th a day between me and my girlfriend at one point...of mid-grade, not the dankness. Then after that had a dank habit of about 1/8th every 3-4 days, sometimes less, often more.) During my periods of heaviest use, I did wake up most mornings feeling quite nauseous, and the nausea went away after a smoke. I just assumed this was my body bouncing back from weed's anti-emetic effect, and I still do think that. Dunno what, if anything, that has to do with this discussion, but I figured maybe my input could help solve this mystery, too. I will say that I know for sure when you're smoking LOTS of bud, and you go without it for a day, nausea, loss of appetite, and headache are all very common.
Just officially quit weed today for the first time since the beginning of last summer. It's been tough, but after a few months of cutting back and psyching myself up, I think this is gonna be a piece of cake at this point. I'm not quitting forever, just taking a break because my girlfriend has to for drug testing and I want to support her. Plus, I'd like to see what my perspective is like when I'm NOT stoned.