selenium is part of the glutathione peroxidase enzyme system reaction. a The catalytic triad that Why Nature Chose Selenium |

doi: 10.1016/s0002-9440(10)62264-x

Cobalt is required in a ruminants diet for the synthesis of cobalamin

Field 28: A new checkbox has been added that is enabled for forms being submitted with CMC and efficacy supplements

PMID 543550.

For patients seeking weight loss who request B12 injections, GPs should: Assess for genuine deficiency through appropriate blood tests rather than empirical treatment Provide education about the lack of evidence supporting B12 for weight loss in non-deficient individuals Explore underlying concerns about weight and energy levels, addressing these through appropriate channels Signpost to evidence-based resources such as NHS weight management services according to local pathways Patients should contact their GP if they experience unexplained fatigue, neurological symptoms (numbness, tingling, balance problems), or signs of anaemia (pallor, breathlessness, palpitations), as these may indicate B12 deficiency requiring investigation

By inhibiting PNP, ImmH also leads to an accumulation of deoxyguanosine triphosphate, which can induce apoptosis in certain cell types, such as T cells