There wasn't any connection that I could see between mould and my debilitating ME (CFS), acquired after graduation from the University of Cambridge in England. Rest and various treatments (chiropractic, diet, supplements, etc.) had helped somewhat. I lived near the sea in Felixstowe, long renowned for its fresh air.
I made some videos, then Erik Johnson commented that some people with ME don't experience those awful "crash" symptoms after everything they do, if they are really free of mould. So I started looking into that.
Now after any exposure to mouldy environments, I immediately bathe and wash my clothes. In my current house, there has never been any mould. My health has improved a lot more.
Although I cannot pinpoint how my illness started, whenever I now "crash," I can see that it is almost always triggered not by overdoing it, stress, or a virus—but after I haven't "avoided mould."
Find out more about Giles and view his videos at his website, Get Well from ME.