As background information, consider that a higher level of homocysteine in our blood, makes us more prone to having blood clots, which result in heart attacks and strokes. A high level of blood serum homocysteine is a powerful risk factor for cardiovascular disease. Furthermore, elevated levels of homocysteine have been linked to increased fractures, in elderly persons.
Homocysteine does not directly affect bone density. Instead, it appears that homocysteine affects collagen, by interfering with the cross-linking between the collagen fibers, and the tissues they reinforce. And, to add insult to injury, recent research suggests that intense, long duration exercise, raises plasma homocysteine levels.
In those who experience a stroke, there is a high rate of hip fractures on the affected side. In a trial with 2 homocysteine-lowering vitamins, (folate and B12), in people with prior stroke, there was an 80% reduction in fractures, mainly hip, after 2 years. Interestingly, in that trial, bone density, (and the number of falls), were identical in the vitamin, and the placebo groups. That implies that the risk of fractures decreased, even though bone density was not measurably increased.
Vitamin supplements counter the deleterious effects of homocysteine on collagen. Since older persons inefficiently absorb B12 from their food, they may benefit from taking oral supplements, with higher doses, (such as 100 mcg/day, as found in some multivitamins), or by intramuscular injection.
http://jama.ama-assn.org/cgi/content/ab ... 293/9/1082
So what does all this have to do with us? Consider the results of this recent study:
Patients with celiac disease and using vitamin supplements had higher serum vitamin B6 (P = 0.003), folate (P < 0.001), and vitamin B12 (P = 0.012) levels than patients who did not or healthy controls (P = 0.035, P < 0.001, P = 0.007, for vitamin B6, folate, and vitamin B12, respectively). Lower plasma homocysteine levels were found in patients using vitamin supplements than in patients who did not (P = 0.001) or healthy controls (P = 0.003). However, vitamin B6 and folate, not vitamin B12, were significantly and independently associated with homocysteine levels.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2653396/CONCLUSION: Homocysteine levels are dependent on Marsh classification and the regular use of B-vitamin supplements is effective in reduction of homocysteine levels in patients with celiac disease and should be considered in disease management.
Marsh classification refers to a method of rating the damage to the villi of the small intestine, in celiac patients. Unfortunately, this system leaves a lot to be desired, as far as accuracy is concerned, as documented by the article associated with the following link:
http://www.docguide.com/news/content.ns ... 870056180B
Remember that just because we are in remission, (with no clinical symptoms), does not mean that our nutrient absorption is back to normal. The article referenced just above, shows that evidence of physical intestinal damage still exists up to 4 years after adopting the GF diet.
http://www.ingentaconnect.com/content/b ... 4/art00008
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