Colloidal gold has a few important uses.
1) It helps with rheumatoid arthritis. This was one of its original uses.
Doctors used to inject ionic gold directly into arthritic joints. Anyone who has used gold chloride knows how easy it is to reduce, and just getting it on your skin causes a stain as the ionic gold is reduced in situ to gold nanoparticles. So once injected, the ionic gold immediately turned into gold nanoparticles which was the active substance.
2) Gold increases cognition and makes people smarter. Almost everyone who has tried colloidal gold reports a lift in brain fog, and better memory. This was actually tested by a researcher and found that 30 milligrams of gold nanoparticles a day resulted in an average of a 20 point IQ gain.
3) For some people, it helps break addictions like to alcohol and drugs.
4) It helps with any autoimmune disease.
5) The only bacteria it is known to kill is the tuberculosis bacteria.
6) It kills candida, at least in-vitro
It does for the mind what silver does for the body.