Besides the research finding a coorelation between a lack of gut parasites and autoimmune dysfunction, and finding that gut parasites lead to a reduction in autoimmune dysfunction, I have a personal story. Ever since I was 7 or 8 years old I used to get excruciatingly painful IBS (I'll leave the gross details out for now). When I was 42 I moved onto a farm. The IBS resolved, not completely, but got much better. This is not science, it might be completely unrelated, but I have been drinking rain water collected from the roof that is not entirely clean, has leaf litter, is collected into a water tank. Instead of getting sick from "non-potable" water, I got well. I actually went for about 8 years without getting sick at all (except for minor sniffles).
Discussion
I’m not surprised at this. I have always worked in the dirt one way or another, had pets and farm animals, my kids played in the dirt as children and we’re all healthy as can be and have been for our whole lives. The tonsils, that reside in the back of your throat where the nasal passages and mouth cavity meet are full of mast cells. Everything you breathe or eat is sampled by your immune system there, and preparations are made at that point just in case one organism or another reaches pathogenic proportions later on. Without constant exposure and preparation your body gets blindsided when exposure does occur. I see the tonsils as explicitly non-vestigial. #touchgrass