Paleogal wrote: > Jeff, > Did you nutritionist give an indication of the reason for so little > absorption? Oliva The way I've heard it described, just having low b-12 inhibits absorption of b-12. So some years of veganism can leave you depleted which makes you unable to absorb it even if you start eating meat. Then you need b-12 shots to get out of it. Also that the non-meat sources of b-12 that vegans are fond of, such as tempeh, have a form of b-12 that is similar enough to real b-12 that it will occupy receptors but won't do the proper job of real b-12, so it only makes matters worse.