I’ve heard a lot of horror stories about GAPS. People seem to destroy their metabolisms and wreck their hormones. It’s possible on any strict diet depending how you go about it though, and not always the fault of the diet itself exactly. I think getting too focused on digestion can lead you to blindside more important things. If you destroy your metabolism, for example, all the supplements, thorough chewing and bone broth in the world won’t improve your digestion, so it’s worth taking a holistic view of things. Adding some gelatin and organ meats to your diet like GAPS and WAPF suggest is a good idea though. They have some good amino acids that help balance out the ones you get from an excess of eggs and muscle meats, not to mention all the micronutrients. Liver once a week is great for your thyroid!