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Severe allergic reactions

One study reported that vitamin B12 deficiency was associated with twice the risk of severe depression (4)

Found mainly in animal products like meat, dairy, and eggs, its often challenging for those with dietary restrictions or absorption issues to maintain optimal levels through diet alone

It can also help regulate inflammation so your body doesnt overreact when responding to threats, allowing the system to stay balanced

A 62-year-old woman who struggled with tiredness and trouble concentrating after gastric bypass surgery saw her symptoms resolve almost entirely within two months after starting B12 shots