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However, scientific evidence does not show that these injections directly promote weight loss in healthy individuals who are not B12 deficient

Some people are needle-phobic others hate remembering to take pills every day

[DOI] [PMC free article] [PubMed] [Google Scholar] 121.Damgaard, M
doi:10.1186/s12916-025-04276-8 Lu XT, Wang YN, Mo QW, et al

Pre-clinical studies suggest that low B12 may contribute to fat accumulation and disrupt lipid metabolism (how the body processes and uses fats for energy and storage)[1]
