I have thought it had something to do with my brother having cancer. It started the week he died. I gained 25 lbs in ONE~ WEEK, no joke. And 25more gradually, but over about a month. That was huge and fast... but NO DOCTOR will even consider it, other than offering me anti-dep meds. I really thought it was some physical-chemical trigger, but got nowhere with any docs on that.
Adrenals- checked, but idiot doc got results back and said some crap about no matter if the results are high or low there is no normal anyway. Jerk.
Diabetes, tested.
Thyroid, levels ok with meds. (that whole thing is a big debate in itself)
lyme disease, tested.
Some vitamin levels, tested cant recall which... doc wont go there again.
basic blood draws, normal.
Not sure what else.. but a lot. I have asked for every test I come across.
I also had terrible hives for a full year when this all started. Never did figure that out... all allergy tests were normal.