side effects of too much b12 injections What You Need to Know About Vitamin Does the Vitamin B12 Shot

Among these necessary nutrients is vitamin B12, which helps generate healthy red blood cells and DNA as well as serving many other functions

Another factor that can increase the risk of a B12 deficiency is a lack of a diverse diet, says Emily Peron, associate professor in the department of pharmacotherapy and outcomes science at Virginia Commonwealth University

A deficiency of vitamin B12 can also cause shortness of breath or heart palpitations, as well as gastrointestinal symptoms including constipation, diarrhea, appetite loss, or gas

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