Wow, very interesting Joe! This has been a problem on and off for me throughout life
Doing Freddd's protocol only just recently taught me what is going on with this, at least partially. It is potassium wasting.
I used to think it was adrenals too, and maybe at times it was. I definitely have salt wasted in the past. But I did not know about potassium wasting.
I have also recently learned about the EFA's role in keeping the cells hydrated. Now I am looking into the amino acid Taurine, which I am sure I am lacking as I haven't eaten much if any meat in recent years.