About 15 years ago, I quit smoking for a year and a half. I became extremely ill with migraines, bowel problems, severe weight gain (60 lbs), severe fatigue....
My doctor at the time insisted it was PMS.

I started smoking again, got better right away and lost all of the 60lbs.
I always believed it had something to do with quitting smoking, but never mentioned it.....who would believe that quitting would make me sick?
Recently, I quit again for 3 months....same thing happened! Since I suffer with autoimmunes diseases, I did a search for autoimmune diseases and smoking. Low and behold! Smoking can mask the symtoms of Hashimoto's disease (autoimmune hypothyroidism)!
I started smoking again so I could function while I saw my current doctor. He already thinks I'm strange, but he listens and accomodates my requests. He tested me for Hashimoto's and it came back negative. He told me to quit again and have the test redone when I'm feeling lousy.
That's where I am now...waiting to feel lousy so I can find out if I have Hashimoto's.
It never occurred to me that cigarettes have gluten! How this relates to getting ill when I quit, I don't know, but am interested in any info available.
I obviously have to quit, but cannot be so fatigued all the time. I care for my husband who is in early stages of Alzeimer's.
I'm actually hoping I have Hashimoto's because then I can quit and be treated. If that's not it...I don't know where to go from here.
Thank you for all of the info here.
Marlene