fledgling
It's only a guess, Greenway, but dark circles under the eyes suggests, to me, parasites. Not that it is anything 'big' to worry about. We all have
parasites of one kind or another.
Have you ever done the Humaworm protocol?
I've found it to be very useful.
There is an 'Ask Humaworm' forum here on CureZome.
You could read their homepage by clicking at the top on their current page. There's lots of information.
It's a great forum.
My best,
Fledgling