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Causes of Vitamin B12 Deficiency There are several reasons why an individual might become deficient in vitamin B12: Poor Absorption Some people have difficulty absorbing vitamin B12 from food or supplements due to factors such as age or certain digestive disorders

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Benefits: Fuel your routine with targeted nutrient support designed for active lifestyles

aggressive iron repletion is now first-line therapy when ferritin is below 75 ng/mL Cold hands and feet poor peripheral circulation and impaired thyroid hormone conversion Dizziness or lightheadedness on standing Headaches , especially in the morning Brain fog and difficulty concentrating Shortness of breath with mild exertion Exercise intolerance slower recovery, higher heart rate at submaximal effort Pica unusual cravings for ice (pagophagia), starch, dirt, or paper