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In this thread 'methylB12 from foods' there is a list of foods with adenosyl-, methyl-, hydroxocobalamin content.
Meat and liver have higher levels of adenosyl- and hydroxoB12. Methylcobalamin is found more in dairy products.
And in humans B12 is stored as adenosylcobalamin in the liver.
Humans need intrinsic factor to absorb B12 in the small intestine.I've heard that the adenosylcobalamin stored in the liver is converted to methylcobalamin as the body needs it. Are there any cofactors that when insufficient can prevent this conversion in people?
Humans need intrinsic factor to absorb B12 in the small intestine.
I'm going to have to let someone more sciency answer that question for you. My knowledge of B12 is very limited.Is intrinsic factor needed to absorb all forms of B12 including adenosylcobalamin ? Can it be bypassed via a sublingual lozenge?
they are?They get B12 from the bacteria that produce it living on the grass they consume. But all cows raised for human consumption are supplemented with B12.
I'll have to check into that as I know when I get tested I am at the very high end of normal. I just assumed that I don't have a problem with B12.I don't know the answer, but if anybody is researching B12, look for this: "functional B12 deficiency". Yo can have, as me, consistently higher than normal B12 as a result of the inability of the body to properly make use of it
Yup, B12 or just cobalt, which allows the cow's gut bacteria to produce the B12, which gets reabsorbed. Our gut bacteria can do this but as non-ruminants, our intestines are too short for it to get reabsorbed.they are?
I've heard that the adenosylcobalamin stored in the liver is converted to methylcobalamin as the body needs it. Are there any cofactors that when insufficient can prevent this conversion in people?
Is intrinsic factor needed to absorb all forms of B12 including adenosylcobalamin ? Can it be bypassed via a sublingual lozenge?