I think there are parasitic elminthes and other good for the intestines. Do you agree with that ? How do you eliminate the bad without hurting the good one ? Does anyone have a good knowledge of this subject ?
I think the best way is the natural one: having a healthy diet and environment. If you re-introduce good helminths (the helminths alone or the fecal transplantation), they will not survive, as the ones we had when we were baby didn't survived to junk food, abusive antibiotics, environmental toxics, psychic life, etc.
If you have a healthy life (unprocessed food, sun, earthing, etc), you"ll get healthy helminths too. Not only these microscopic worms, but also good bacterias and fungus. Because these micro-organisms are in nature, in soils, in spring water. Did you notice babies who naturally eat earth (unless adults prevent them to), dogs who like rolling around in a puddle of water with mud? But nowadays we can't let babies do so, as soils are polluted: microorganisms became altered, thus pathological.
I don't think there is bad guys, good guys per se in our intestines. i think some microbes became bad because of changes in their DNA by toxics (man-made toxics, especially chemical ones). Without normal proteins on their membranes, how could they be able to properly communicate with our cells? It's become upside down, no more appropriated info, thus chaos.
DNA --> proteins --> communication among cells, and also between cells and microbes.
The other bad guys are
- those created by man (cf spirochete in Lyme disease, HIV, Ebola,...) ie bioweapons.
- those that are new to our planet (brought by meteorites), creating epidemies as black plague.
Even these real bad guys, you can defeat them by strengthening your immunity: good diet again, sun, good mental, etc. Finally, with a healthy lifestyle, you both maintain good guys + get strong immunity.
You can go and get all the "best" medical tratments, all the best alternative medicine like probiotics, vitamins, it will be without or little effect if you don't parallaly change diet, psychism, etc.