I'm new to Paleo and in a steep learning curve right now so apologies for my incessant questions. Here's what I'm wondering about now:
The 30-day challenge says that once we eliminate all the potential problem foods for 30 days, it'll then be easy for us to figure out what we can tolerate, since as soon as we re-introduce it, we'll notice if we feel worse which tells us to avoid or limit that food. I just listened to Robb's podcast with Kurt Harris and he talks about this as well - that's he's not "anti-dairy", he just thinks not everyone can handle it, so give it a break for a while, then bring it back in and see how you feel
The thing is, my understanding was that the body produces digestive enzymes according to the type of diet it's being tasked with digesting. I've actually seen research papers on this. So if that's true, then it seems like OF COURSE everyone is going to feel GI distress once they reintroduce wheat or dairy or legumes, because the body won't have had it for 30 days and so will have decreased production of the enzymes needed to break it down.
In short, is it possible that the 30-day challenge gives people "false negatives", i.e. bad reactions to foods that, prior to doing the challenge, their bodies might have actually tolerated perfectly well?
And apologies if this is hugely ignorant. I am not a scientist, just a lowly person with IBS trying to figure this out.