b12 injections benefits for athletes of Optimal Health B12 supplement boosts energy levels

That conversion depends on liver enzymes and methyl donors such as folate

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In addition to fatigue, a deficiency of B12 can lead to other symptoms like pale skin, headaches, depression, gastrointestinal problems, difficulty concentrating, decreased mental function, mouth and tongue pain or inflammation, and paresthesia in your hands and feet

This can hinder the absorption of vitamin B12

In such cases, an injection bypasses the gut and delivers B12 directly into the bloodstream