Avatar universal

What causes vitamin B 12 to be so high?

My vitamin B 12 is over 1800. I do not take any supplements (anymore) and I do not have a high vitamin B 12 diet. A few years ago I even had to be on vitamin B 12 injections because I was so deficient. Now it is extremely high it is not lowering. I also only have a 7% iron saturation. Normally when you have low iron you have low vitamin B 12, not high B12. What could cause both low iron and extremely high vitamin B12?
1 Responses
Sort by: Helpful Oldest Newest
Avatar universal
I'm not sure it's true that normally you would have low B12 if you have low iron.  It can happen, but it doesn't have to happen.  There are two types of anemia I know of, and one is iron and the other is B12 and you can have one without the other.  High B12 can be a sign of liver disease, and if you have a good doctor he would have looked at this as a sign of possible liver problems.  While B12 is mostly water soluble, it also stores excess in the liver for use later.  High B12 in itself isn't a risk factor for anything in particular, so if your liver enzymes and other diagnostics of your liver show no problem there you don't necessarily have any health concerns having high B12.  There are potential reasons why you might have high B12, though only potential, not definite.  One would be a lack of folate and B6.  The three are in balance in order to have healthy homocysteine control and when they're out of balance it can be a problem down the road for the heart, maybe.  It could be your liver stored a lot of B12 because you were given way too much of it and it hasn't flushed out.  It is hard to have a diet that's too high in B12 because, again, that's not a health problem really absent being a signpost of a liver problem and also because your body will evacuate what it doesn't need.  What I'd do is ask your doctor about potential liver problems, and I'd also get another blood test to make sure this one wasn't an anomaly.  Peace.
Helpful - 0
I meant to mention another problem some people have is a genetic defect that can cause problems with B6, folate and/or B12.  This is usually a problem with methylation and a problem with converting these B vitamins to the methylized form which is necessary for cellular energy.  But if you had that, you would know, as you would have been supplementing with a synthetic form of B12 called methyl B12 instead of the normal supplement with methylcobalamin.  
Have an Answer?

You are reading content posted in the Undiagnosed Symptoms Community

Top General Health Answerers
363281 tn?1643235611
Nelson, New Zealand
1756321 tn?1547095325
Queensland, Australia
19694731 tn?1482849837
Learn About Top Answerers
Didn't find the answer you were looking for?
Ask a question
Popular Resources
Discharge often isn't normal, and could mean an infection or an STD.
In this unique and fascinating report from Missouri Medicine, world-renowned expert Dr. Raymond Moody examines what really happens when we almost die.
Think a loved one may be experiencing hearing loss? Here are five warning signs to watch for.
When it comes to your health, timing is everything
We’ve got a crash course on metabolism basics.
Learn what you can do to avoid ski injury and other common winter sports injury.