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Chemical & Engineering News, 2026
Other factors that could lead to B12 deficiency are: Lack of adequate production of the intrinsic factor needed for B12 absorption B12 deficiency is common in elderly people as absorption of the vitamin reduces with age People who have had any intestinal surgery, such as that for weight loss Those with gut conditions such as Crohn's Disease, inflammatory bowel disease, or celiac disease SLIDESHOW See Slideshow Vitamin B12 injections Vitamin B12 supplements are given based on the condition that causes deficiency
Research indicates that individuals with BP-I remain symptomatic for nearly half of their illness course, with depressive symptoms being the most frequent and persistent, significantly outweighing manic/hypomanic and mixed episodes (Nierenberg et al., 2023)
It also has a role in nitrogen balance and maintaining body protein, which can help preserve muscle tissue while on a weight loss program
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