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For vitamin B12 to be absorbed from the gut, it must bind to a protein called intrinsic factor, which limits how much B12 the gut can take in at one time

However, various factors can affect the levels of this vital nutrient, including storage and cooking

It was identified in the late 1980s and initially attracted attention because its deposits are found in the pancreases of people with type 2 diabetes

Benefits of B12 Injections: Might Reduce Depression, Cognitive Decline and Dementia: Some studies show that, especially in older people, supplementing with vitamin B12 can prevent depression, restore better mood control and retain healthy memory/mental functioning