"What does not kill you makes you stronger"
I got the red circle many years ago from a tick. I didn't go to the doctor. I've had different kind of symptoms, and it's all so complicated to see the big picture, there are so many variables involved, where the problems might come from, what they are triggered by, what is the cause.
I know that I have become much better, and it is true, I had problem digesting and eating meat, which has become much better since I eat raw meat (I can even eat cooked meat some times and not feel problematic symptoms). But the reason in my case, I am quite sure was partly due to the fact that I had been a vegetarian, vegan and then fruitarian for so many years. But it could in theory also be other reasons, I think the human body is so much more complex than we think.
We somehow need to be exposed to "nature", even the bad parts (to a certain extent).