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Vitamin B12 plays a vital role in maintaining healthy nerve cells, supporting red blood cell production, and aiding in DNA synthesis

If the deficiency is caused by pernicious anaemia, your immune system is attacking the healthy cells in your stomach and preventing your body from absorbing B12 from the food you eat, so youll need the injection to fix the problem

doi: 10.3390/foods12081631

[37] MET promoter has four putative binding sites for Ets, a family of transcription factors that control several invasive growth genes

DRI, dietary reference intake

eye cream study (which outperformed both vitamin K and vitamin C in periorbital wrinkle reduction) round out the photo-aging evidence base 13 14