Celiac Disease (CD + celiac sprue)
gluten intolerance
Understanding
 
7/1/2004 + 12/9/2005 Wall Street Journal says this disease is triggered by gluten protein in certain cereal grains (wheat, barley, rye) & can be treated by gluten free diets.
European doctors are more aware of this disease than American doctors.
Dermatitis herpetiformis, a rare skin condition, may be linked to celiac disease. A genetic variant may unravel biochemical processes, resulting in antibody attacks against gluten & intestinal hair-like extrusions/villi that line the intestines & absorb food nutrients digested in the stomach. A Dutch Dr Willem Dicke recognized the protein gluten as the possible culprit after celiac children improved after WW2 disrupted 4 supplies.   www.wsj.com
 
Down's syndrome & schizophrenic patients need to be careful about certain injections if they are lactose intolerant or have celiac disease. Web page also addresses recommended supplementation. www.dsrf.co.uk + Learn about Gluten in Medication
 
Greenblatt, Dr. James @ https://www.jamesgreenblattmd.com/beyond-the-gut-the-relationship-between-gluten-psychosis-and-schizophrenia/
 
Gluten Sources
Sources of Gluten | Celiac Disease Foundation  
+ Learn about Vitamins and Supplements
+ Learn about Oral Health & dental products

Research
 
Einkorn - http://www.thehealthyhomeeconomist.com/is-heirloom-wheat-hybridized/ -
Truly unhybridized wheat has only 2 sets of 7 chromosomes, for a total of 14.
The only wheat variety that meets this scientific definition is einkorn. 
Einkorn is the only wheat variety on Earth that has 2 sets of 7 chromosomes each (male & female) which indicates a completely unhybridized state...
Wheat is NOT currently (8/2015) genetically modified. While it is true that unapproved GMO wheat was discovered growing in Eastern Oregon in 2013 (& Monsanto reached a $2.4 million settlement with Pacific Northwest wheat farmers over the situation), genetically modified (GM) wheat is NOT approved for use in the food supply anywhere in the world as of this writing. 
Hybridization is NOT the same as genetic modification (1).
 
https://www.glutenfreesociety.org/schizophrenia-and-gluten-sensitivity-is-there-a-connection/
 
How Your Gut Health Affects Your Disease Risk (theepochtimes.com) 1/12/2021
 
"So, what are lectins (natural plant 'antibodies' or pesticides, existing in most plants, especially shell beans, lentils, legumes)? While having different roles as it relates to the plant itself, the function we are most concerned with here is as it relates to our consumption of them. 
When consumed, these lectins are anti-nutrients, carbohydrate-binding proteins that can lead to various types of digestive distress, as they are rather sticky once a part of the digestive tract.
Certainly, this is very problematic for those with impaired digestive function (i.e...Celiac disease & gluten intolerance)...
Certain seaweeds such as (some cold water seaweed containing sodium alginate &) bladderwrack (containing fucose sugar) as well as okra (containing mucilage gel) work as binders to the lectins, preserving the intestinal wall.
N-acetyl-glucosamine (NAG) is a glycoprotein (decoy sugar) that is a major component of connective tissue & is a common place for lectins to aggregate; supplementation with NAG seems to protect the body as well.
Finally, another lectin-protecting supplement, the sugar D-mannose, can serve as a decoy to the Urinary Bladder cells that can be a prime target for lectins. Taking any of the above before a meal may function as a 'magnet' for the lectins, rather than the target tissues they might otherwise affect." http://naturallylivingtoday.com/beyond-gluten-free/ 1/19/2012 -
(Marlene Merritt, L.Ac. has a great series of YouTube videos related to this topic. )
 
Woodford, Professor Keith - https://keithwoodford.wordpress.com/2014/04/02/human-health-implications-of-a1-versus-a2-beta-casein-theory-and-current-evidence/
 
Zonulin - http://www.jillcarnahan.com/2013/07/14/zonulin-leaky-gut/#
Top Causes of Increased Zonulin & Development of Leaky Gut:
1.  Overgrowth of harmful organisms, like bacteria or yeast in the intestine
     a. SIBO = small intestinal bacterial overgrowth
     b. Fungal dysbiosis or candida overgrowth
     c. Parasite infections
2.  Gliadin in the diet (gluten containing foods).  Gliadin is a protein in wheat, that like gluten, is a trigger for people with celiac disease. However, a study published in the Scandiavian Journal of Gastroenterology in 2006 clearly showed that gliadin can affect zonulin even in people without the gene for celiac.
The researchers concluded that:
Based on our results, we concluded that gliadin activates zonulin signaling irrespective of the genetic expression of autoimmunity, leading to increased intestinal permeability to macromolecules.
The significance of this is that gluten affects intestinal permeability in all persons to different extents.
It also means that 100% of patients with autoimmune disease or leaky gut could potentially benefit from a gluten-free diet.
Zonulin - http://www.npr.org/sections/thesalt/2015/12/09/459061317/a-protein-in-the-gut-may-explain-why-some-cant-stomach-gluten -
"Zonulin is an inflammatory protein - 1st discovered by Fasano & his team in 2000.
It helps regulate leakiness in the gut by opening and closing the spaces or "junctions" between cells in the lining of the digestive tract. Zonulin is triggered by harmful bacteria, & offers important protection to the body:
If you accidentally eat a food contaminated with salmonella, you rely on zonulin to help trigger diarrhea & flush out the bugs.  Once the pathogen is gone, zonulin levels drop and the junctions close. 
So what does it have to do with gluten? It turns out that gluten is a strong trigger of zonulin in some individuals. "No human being completely digests gluten," says Fasano.
"In a small percentage of us, that undigested gluten triggers the release of zonulin," leading to high levels of it...
The results were presented in October as an abstract at the 23rd United European Gastroenterology Week in Barcelona, Spain.  "I was very surprised, but not only by the zonulin levels," says Barbara.  "In our study, gluten-sensitive individuals who responded to a gluten-free diet had a genetic predisposition to celiac disease.
They had no evidence of celiac, but they did have the vulnerable genes that put a person at risk of celiac"...
Zonulin..."molecule is extremely important in a lot of illness, from Type 1 diabetes to other autoimmune diseases.  Many illnesses link back to loss of barrier function in the gut."  by Jill Neimark 12/9/2015 - good -
https://www.highya.com/restore-reviews - Celiac disease is reduced inability to process plant protein gluten. 
Referenced product contains terrahydrite, a stabilized extract of lignite (brown coal or compressed plants that have become peat, before becoming coal) which may assist the gut protein ZONULIN to regulate openings between one's intestinal cell calls. 
It may also thwart wheat's protein gluten from adversely interfering with GI cell walls.
 

Spiritual
 
Maccaro, Dr. Janet - Dr. Janet's Guide to Thyroid Health with Dr. Janet Maccaro - Part 1
Maccaro, Dr. Janet - Dr. Janet Guide to Thyroid Health with Dr. Janet Maccaro - Part 2
A daily probiotic is one means to be proactive, as well as steering clear of gluten. 
Test for TSH + TPO & TG antibodies.