cause of low B12

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Veteran Member

Date Joined Feb 2003
Total Posts : 1195
   Posted 2/8/2008 7:26 AM (GMT -7)   
I just got my blood work back.  My hemoglobin etc is low ( as always) but now my B12 is low as well.  This is a hing.  Any good reasons? 

Regular Member

Date Joined Jan 2007
Total Posts : 56
   Posted 2/8/2008 8:24 AM (GMT -7)   
Did you have your TI removed?  I did and that is why I was started on the B12 injections.
Diagnosed with Crohn's Disease in 2000
Bowel Resections 6/05, 11/05 & 7/06 (removal of terminal ileum and appendix)
Humira 40mg. every week
Percocet 10/325mg
Codeine 30 mg.
Cymbalta 30 mg.
Xanax 0.25mg
Phenergan 25 mg.
Zofran 8mg.
Hydroxine 25mg.
B12 Injections monthly

Veteran Member

Date Joined Mar 2006
Total Posts : 1169
   Posted 2/8/2008 8:25 AM (GMT -7)   
B-12 si absorbed in the terminal ileum. If it is missing or scarred that would reduce the amount absorbed, eventually resulting in low blood levels. This is fairly common in Crohns disease that affects that area.

Veteran Member

Date Joined Apr 2005
Total Posts : 3763
   Posted 2/8/2008 8:44 AM (GMT -7)   
Your body keeps stores of B12 so even if you had your TI removed or it has been diseased/scared for a long period of time, it might be a while before you would need to have B12 shots. I went almost 7 years after my last resection, 10 years from my first resection. It all depends on how severe the disease activity, how long it has been going on and how much of a reserve you have built up.

CD 19 years offically, 29 unofficially. 3 resections '93, '95 '97
Symptoms constantly but all tests show only minor ulcerations. Currently having multiple episodes of gastritis with no known cause.

Prednisone, 6MP,Prevacid, B12 shots, Bentyl, Xifaxan.....

Elite Member

Date Joined Feb 2004
Total Posts : 20577
   Posted 2/8/2008 12:15 PM (GMT -7)   
If there is disease activity in the terminal ileum where B12 is absorbed then that can hinder you as well, also it's fairly common for CDers to have a poor ability to absorb vitamins and nutrients via foods alone because of intestinal inflammation due to the disease and/or because of not getting enough nutritious foods since many CDers say they cannot tolerate nutritious foods like fruits and veggies.

My bum is broken....there's a big crack down the middle of it!  LOL  :)

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