Memory, mood and clear thinking

SAM, the methyl donor B12 keeps flowing, is needed to make and recycle serotonin, dopamine and noradrenaline, and to maintain the sheaths in the brain and cord. A long shortage can read as low mood, slow thinking, confusion or unsteadiness, and in older people it is often mistaken for ageing itself. Caught early these lift. Caught very late, some of it stays, which is the argument for not waiting.