There’s quite a lot to unpack here and I’m sure there’s a few days of research papers to read to even begin to scratch the surface of some of what’s going on here with regard to the disgust portion of the program.
One of the things that strikes me offhand within the conversation of botulism and its increase when Arctic peoples went from traditional life ways to more modern ones are related stories I’ve heard, even recently, from researchers who are looking for replacement antibiotics for evolving superbugs. Often their go-to place for searching for them is in the dirt which can be found all around us. I’m curious if there’s not only specific chemistry (perhaps anaerobic or even affected by temperature) but even antibiotics found in the ground which are killing microbes which could cause these types of sickness? Of course, with extreme cold usually comes frozen ground and permafrost which may make burying foods for fermenting more difficult. I’m curious how and were native peoples were doing their burying to give an idea for what may have been happening to protect them.
Another piece which dovetails with this one is a story I heard yesterday morning on NPR as I woke up. Entitled To Get Calcium, Navajos Burn Juniper Branches To Eat The Ash, it also covered the similar idea that native peoples had methods for fulfilling their dietary needs in unique ways.