can you get too much b12 injection Vitamin B12? Why You Shouldn't Worry About

Pernicious Anaemia is caused by either the patient not producing Intrinsic Factor that is needed to bind with vitamin B12 from food before it enters the blood stream or the Intrinsic Factor is being produced but is then destroyed by antibodies to the Intrinsic Factor auto-immune Pernicious Anaemia

The NHS provides resources on maintaining adequate B12 intake for those following plant-based diets, emphasising the importance of fortified foods such as breakfast cereals, plant-based milk alternatives, and yeast extract products commonly available in the UK

Some research suggests that adequate B12 levels may support cognitive function, particularly in older adults, though evidence does not currently show that supplementation prevents cognitive decline in people without deficiency

Role of CD38 and its ligand in the regulation of MHC-nonrestricted cytotoxic T cells