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People often experience temporary redness or soreness where the injection was given
Because both vitamins affect red cell size, a raised MCV can also be a clue when the B12 looks comfortable
Natural Sources of B12 Common sources of B12 include: Beef and liver Eggs and dairy products Fish such as salmon and tuna For people who dont consume animal products, fortified cereals or supplements may be needed to maintain healthy levels
Pale Skin and Shortness of Breath People with a B12 deficiency may develop pale skin due to a decrease in red blood cell production, which can also lead to feelings of shortness of breath
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