I'm interested in parasite infection but a little confused. Undoubtedly there are parasites which we must avoid/remove at all costs, but I rmember reading an article suggesting that some forms of parasite are important to human beings.
The gist of the paper which was produced by scientists at either Oxford or Cambridge university (can't remember which) was that certain parasites are helpful and should be present in our digestive tract. Much in the same way that Candida Albicans does serve a purpose and should be present to some degree, but is pathogenic if we create the right environment for overgrowth.
As I recall their research was something to do with allergies, They found that if they got people to drink a substance containing certain worms, the allergies would be resolved.
Sorry I can't recall the exact details or give you a link. Just think we should be wary of completely sterilising our guts in the pursuit of 100% health. Perhaps someone else can recall more details or will do some research into this.