Deus - I could be mistaken & there could be other ways coelic/sprue manifests itself in different people BUT BUT BUT the main symptom would be weight loss that seems irreversible. I don't know how or why they may be related but the dietian, Celiac foundation and endo nurse were neither surprised or uneducated when we said Ed has both dm & sprue.
I'm not a huge advocate of "mind-altering" drugs myself ... unlike some politicians, I smoked ONE marajuana cig in my lifetime and I DID inhale!

I decided if this is "drugs" I don't need it. I've taken anti-depressants 3 times in 30 years and each time I was my own med-nazi.
I'm not trying to force or disuade depression meds on anyone. It is my personal opion that while they are over-prescribed for the slightest ailment, they can be of great help in certain situations. And depression begets depression as symptoms are so vague & unexplainable one can feel
guilty at not being able to kick it off. It's the
length of your symptoms that puts up the red flag to me.
Keep up your vigilance and insistance to your med team that they keep testing you for ANYTHING. Good luck! Beth.