Many people here may have these, and not know it.
I have recently discovered, as a scientific fact, that I have a massive infestation of protozoa and 'like' microbes.
They attach high up in the small intestine, and can proliferate to very high numbers, without significant detection from stool exams.
I hypothesize, that this can cause such an effect on the body's system, as to knock down some immune-functions.
This can lead to certain co-infections including fungal. Some fungals may even serve as a defense against the infection in the lower bowel.
But, it is likely the waste being produced by the microbes, which attract yeasts\fugal etc.
I have been to the 'best of the best' for this condition, and was denied drugs of choice based on negative lab results.
After convincing a GP to prescribe the drug of my choice, I was able to successfully ascertain the above information by microscopic study.
If anyone doubts the neurological effects a parasitic infection like this can cause, now is the time to ponder the facts.
It is now my firm belief, that it is parasitic infestations---many which are considered pathogenic---that are the direct cause of yeast\fungal issues in normally healthy people. Shroom