van Bon L, Affandi AJ, Broen J, Christmann RB, Marijnissen RJ, Stawski L, Farina GA, Stifano G, Mathes AL, Cossu M, York M, Collins C, Wenink M, Huijbens R, Hesselstrand R, Saxne T, DiMarzio M, Wuttge D, Agarwal SK, Reveille JD, Assassi S, Mayes M, Deng Y, Drenth JP, de Graaf J, den Heijer M, Kallenberg CG, Bijl M, Loof A, van den Berg WB, Joosten LA, Smith V, de Keyser F, Scorza R, Lunardi C, van Riel PL, Vonk M, van Heerde W, Meller S, Homey B, Beretta L, Roest M, Trojanowska M, Lafyatis R, Radstake TR (2014) Proteome-wide analysis and CXCL4 as a biomarker in systemic sclerosis

You may also be more likely to develop vitamin B12 deficiency if you have: Atrophic gastritis, in which your stomach lining has thinned Pernicious anemia, which makes it hard for your body to absorb vitamin B12 Conditions that affect your small intestine, such as Crohn's disease, celiac disease, bacterial growth, or a parasite Immune system disorders, such as Graves' disease or lupus You can also get vitamin B12 deficiency if you follow a vegan diet (meaning you don't eat any animal products, including meat, milk, cheese, and eggs) or you are a vegetarian who doesn't eat enough eggs or dairy products to meet your vitamin B12 needs
Still, results depend heavily on sourcing, dosage precision, and professional guidance
It is derived from a larger protective protein naturally found in human gastric juice the digestive fluid produced by your stomach lining