I wish only to address the B12 deficiency & possible gluten intolerance.

When there is an issue of intestinal malabsorption, deficiencies of nutrients are not all the ame. There is some genetic variablilty which in a healthy individual may not matter but in an intestinall-impaired one may make a huge difference.

For instance, some people have a genetic problem with the absorption, metabolism or utilization of Vitamin B12 & folate (vitamin B9). Another person may have genetic variations affecting the absrption of calcium. In those people, osteoporosis may be the bigger issue. And again, if it were not for the malabsorption to begin with, they might have grown old wthout ever being profoundly and adversely affected by those calcium absorption genes.

1- You may benefit from shots of B vitamins. You may benefit from the methylated forms of B vitamins. In the United States, a prescription methylated B vitamin exists called "Metanx", but these ingredients are also over-the-counter and can be obtained via the Internet.

2- You may benefit from a gluten-free diet, and dairy-free as well.

Jaspar