b12 injections and weight loss side effects Does Vitamin Promote Loss? B12 Injections for Weight Loss
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It is a synthetic small molecule
John DiBella Published: November 3, 2025 Fact-checked by Dr
However, the oral route cannot be excluded as it did not depend on intrinsic factors only, as the simple diffusion (without the need for intrinsic factors) is now considered another mechanism for the absorption of vitamin B12 [49, 50]
The following factors may increase the likelihood of having a B12 deficiency
