What is necessary for healing is fruits and herbs (herbal extracts, herbal tinctures, herbal capsules, fresh herbs, herbal teas etc.).
There are two major fluids in the body: blood and lymph.
Blood brings nutrients in and lymph takes wastes out.
Blood makes up approximately 1/4 of the fluid and the lymph makes up the other 3/4.
Mainstream medicine focuses too much on blood and not enough on lymph which makes up the majority of the fluid.
Because of the highly toxic processed foods, beverages, drugs and environment that humans are in our natural detoxification organs and systems are backed up and congested.
When waste stagnates it causes dis-ease, this is the substrate in and on which bacteria, viruses, parasites and other negative organisms thrive.
Modern medicine focuses on the bacteria and killing that, instead of the "terrain" or the waste on which it feeds.
For example if there is a turd, and you spray disinfectant on the turd, you killed the bacteria on the surface but you didn't get rid of the reason that the bacteria are thriving.
You need to get to the root.
Basically we cannot even properly absorb or eliminate anything until we address the lymphatic system
Have a look at the video I recommended for more info. Dr. Robert Morse has helped people with various conditions of varying severity from psoriasis, to cancer, to diabetes and much more.
Understanding the lymphatic system really makes health a lot easier to understand overall, and things make sense.
Just think, it is not the bacteria/virus/fungus/etc we should worry about necessarily, but the terrain in which they thrive.
Youtube search "Dr. Robert Morse lymphatic system" for more info, he has the best detox method I have found although there are lots of other modalities that can work in conjunction it is best to keep it simple initially.
Here are Dr. Robert Morse videos explaining detoxification and the lymphatic system, very empowering!