My GP had my serum B12 retested and my serum MMA tested: as she suspected, I had functional B12 deficiency, a diagnosis confirmed by the testing laboratory, which means that high levels of both in the bloodstream are due to them not making the connection necessary to transport the B12 to cells and tissues
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Accumulating evidence has revealed that changes in microglial functions (for example, morphological changes, process movement, and inflammation) are required for the development of chronic pain [60,61,62]
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Last reviewed January 2026
Small molecule selenium-based glutathione peroxidase 4 mimetic inhibits lipid peroxidation and protects cultured neurons from ferroptosis