I feel that falling apart bit, I've gotta see an alergist in a few months because even after fixing gluten I'm still feeling like I'm held together with tape and meds that barely work. I've been loooking in the mirror like "well I gotta fix up this beard or get in shape for when my shoulder length hair finally decides to just vanish at 30 like my dad's did". I might try to swap to a conditioner wash routine, maybe that will buy me a couple extra years of my mane, or at least make it healthier and definitely a genetic hair loss and not my own damn fault lol.

Any way to eat cleaner will definitely help you feel better, so even if gluten free or keto or something else doesn't totally solve the issue, keeping vegan will have good health results in the long run. But you do cut out several similar things for both gluten free and keto so I'd bet you're right about the issue being related to wheat products somehow, its just a mess trying to figure out the exact reason for feeling off.