11. Confusion
It’s also been shown that a B12 deficiency is linked with the onset of dementia. This shows the link that B12 might have with cognitive performance and there are lots of additional explanations for why B12 might be necessary for good brain function.
Firstly, when you damage myelination, you impair the brain’s ability to form new memories and to learn via brain plasticity. At the same time, seeing as low B12 means low oxygen getting to the brain, it follows that this would hamper performance by reducing the energy that is supplied to the neurons. It might also negatively impact nutrient delivery, which could in turn cause the death of brain cells.
If you find yourself feeling confused, depressed, or forgetful, then it is very important to speak with your physician and to suggest B12 as a possible cause.