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Changes to the microbial phyla and genera observed in the 5A-1MQ-treated group switched from WD to LD could have been driven by additive, synergistic, or independent mechanisms relative to those induced by diet switch alone, which could not be determined with the current study design that lacked a group treated with 5A-1MQ and maintained on WD

Age Studies show that people who are over the age of 50 may struggle to store vitamin B12 due to a decrease in the production of stomach acid and inflammation of the stomach

PLOS Genet 14:e1007561

As of mid-2026, no published human clinical trials exist for the compound

But not everyone who feels tired is B12 deficient, and not everyone with low B12 requires an injection

B12 Injections for Weight Loss: Evidence and NHS Guidance B12 injections for weight loss have gained attention in wellness circles, yet clinical evidence does not support their use for this purpose in individuals without deficiency