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It is the foundation that makes everything else work
The Basics: Why Vitamin B12 Matters Vitamin B12 (cobalamin) is more than an "energy vitamin." Your body relies on it for several core functions, and a true deficiency can cause real symptoms
Foods with B12 are always the first choice, but if you have trouble eating B12-rich foods, or have problems absorbing B12, another potential vitamin B12 source is a multivitamin
Yucel, M., et al
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