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Co-occurring deficiencies: you might also need support with iron, vitamin D, or folate

Treating a B12 deficiency may boost energy and mood, reduce stress and fatigue, and decrease symptoms of multiple conditions

Osteoporosis is a disease that causes bones to become brittle and easily break, and postmenopausal women are at particularly higher risk of the disease

When to Seek Help: What If I Don't Feel Better

Fortunately, there is increasing evidence that oral B12 supplements are just as good as injections for raising blood levels in most people ( Vegetarians and vegans are usually advised to take at least 10 mcg per day, or at least 2,000 mcg once per week ( However, some doctors still prefer the use of injections

Vitamin B12, also called cobalamin, is a water-soluble vitamin that plays essential roles in red blood cell creation, cell metabolism, nerve function and production of DNA