Plasma vitamin B-12 concentrations relate to intake source

[HOTROCKS]

I ordered my B Complex inject yesterday.
This study is a very good read.

http://www.ajcn.org/cgi/content/full/71/2/514

The plots of vitamin B-12 concentrations by intake quintiles for specific sources were adjusted for the total remaining vitamin B-12 intake from other sources. These plots suggested that the vitamin B-12 in supplements, fortified breakfast cereal, and dairy products may be more efficiently absorbed than the vitamin B-12 in meat, poultry, and fish sources

I would have never thought that.

all groups got more of their vitamin B-12 from meat than from any other source, those with lower vitamin B-12 concentrations obtained significantly more of their vitamin B-12 intake from meat