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These are common signs people bring up when they ask us about B12: Ongoing tiredness or low energy Trouble concentrating or remembering Pale skin Mood changes or irritability Feeling lightheaded or weak If several of these sound familiar, a simple blood test can help you and your provider decide on the next steps

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Foods that are high in vitamin B12 beef liver seafood, such as: fortified breakfast cereals beef dairy, such as: vegetables, such as: lettuce asparagus spinach dark leafy greens Learn more about foods that can increase and reduce vitamin B12 levels

Only 2 pounds in two weeks with diet and daily exercise

Low B12 can happen for different reasons

Venous thromboembolism and hyperhomocysteinemia as first manifestation of pernicious anemia: a case series