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The Loading Phase: Refilling the Tank When you have pernicious anemia caused by autoimmune gastritis, your immune system has destroyed the stomach cells that produce intrinsic factor a protein necessary for absorbing vitamin B12 from food

Pernicious anemia is an autoimmune issue that stops Vitamin B12 absorption

According to the World Health Organization, 39% of adults worldwide are overweight, and the most effective approach combines multiple strategies

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Injections may be given weekly or biweekly for a short period when levels are low or symptoms are present

The second option is to have vitamin B12 injections