Is It From Diet Deficiency or Poor Absorption?
by Doc Don Davis
There are many health problems that are linked to Vitamin B12 levels but most doctors assume that it’s a matter of deficiency. In reality, at least in North America, it is much more likely an issue with absorption. It’s thought that about 30% of people over 60 are affected by low B12 levels (aka hypo-cobalaminemia).
B12 is vital for proper brain and nerve health and so it’s linked to many brain and energy maladies like memory loss, anemia, cardiovascular disease and numbness, tingling, depression and loss of cognition that can be the beginnings of dementia.
Years ago it was believed that B12 deficiency was due to dietary intake because of the predictable deficiencies that can occur with vegetarian/vegan diets and the problems in developing countries. While it is true that this presents a problem, we find that even people with adequate meat in the diet are prone to this condition.
Contrary to popular belief, not only strict vegetarians (vegans) are at high risk of vitamin B-12 deficiency.
Am J Clin Nutr February 2009 vol. 89 no. 2 693S-696S
Since dietary intake is usually adequate, that leaves poor absorption as the major reason for B12 deficiency. This is by far the most common reason for low B12 and the subsequent declining brain dysfunction and anemia.
Stomach acid and Vit B12?
Absorption of B12 occurs in the intestines but must have a healthy stomach that produces stomach acid and intrinsic factor tomake this happen. Unfortunately, stomach acid declines with age which affects the level of intrinsic factor and then the B12 levels start to plummet. This can be helped and actually reversed with supplemental hydrochloric acid (HCL).
Intrinsic factor can also be lowered when you have a condition called Pernicious Anemia that can cause fatigue, lethargy and weakness. This is an auto-immune condition where the body attacks the cells that make intrinsic factor. In this case, treatment must include the immune system as well as the low levels of hydrochloric acid.
How about inflammation?
There are other reasons for decreased B12 absorption, like bacterial overgrowth, intestinal inflammation and gluten sensitivity. Inflammation can make it difficult for micronutrients like B12 to pass through an inflamed and damaged gut lining into the bloodstream.