You mentioned your diet... without being obnoxious or evangelical about it...I got hold of a book called The Wheat Belly.
What an eye opener, I read it from cover to cover, am going to buy my own copy and the accompanying cookbook.
I have virtually eliminated wheat from my diet, and am trying to cut back on carbs...where possible and practical.
The bad arthritic pain I had in my hands is greatly reduced, climbing six days a week is still going to cause pain regardless of diet! My energy levels are much more consistent.
I got rid of most of those extra supplements I was taking to reduce inflammation, cinnamon, tumeric, glucosamine, olive leaf extract...because I didn't need them any more, at least not for arthritic pain.
I have lost weight, yeah I know I'm small to start with but I was getting some of that 'belly fat'.
In short, the wheat we eat today isn't our grandparent's wheat, it is so changed that the effects on our bodies is largely unknown, but many, many modern issues of health have a link, including 'brain fog' and emotional issues..according to the author, who is a Dr. The science in it is compelling.
I got my hubby to cut out as much wheat as possible too, mainly no bread, his joint pain is almost gone, and his 'love handles' are shrinking.
Even if you just borrow the book from the library, read it and draw your own conclusions, can't hurt, might help.
Wishing you all the best!