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The energy boost encourages more physical activity, which further supports weight loss efforts
If you are concerned you may be vitamin B12 deficient, Labcorp OnDemand offers a Vitamin B12 Test that can give you the insights you need
Olasupo Odunsi, MD, Medical Director Reviewed July 5, 2026 If you're constantly tired and your metabolism feels stuck, low B12 could be part of the problem
Vitamin B12 Supplementation: Preventing Onset and Improving Prognosis of Depression. Cureus, vol
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