Quote:
Originally Posted by questionmark
My blood tests last year were pretty normal though I suspect something is up with B12 as it was on the high end of normal.....and I have been informed that sometimes that actually indicates deficiency.
|
Just in the "for what's worth category,' there's a pretty common genetic mutation carried by about 20% - 30% of the population that results in better absorption of B12 and higher serum levels. I run high-normal and do have this mutation.
Additional studies have been run confirming this, but this abstract from 2008 was brief.
http://www.ncbi.nlm.nih.gov/pubmed/18776911
"Women homozygous for the rs492602[G] allele had higher B(12) levels."