Vitamin B12 is a vital nutrient that plays a key role in brain function, nerve health, red blood cell production, and heart health. As men age, their ability to absorb vitamin B12 naturally declines, making deficiency increasingly common after 50. Low B12 levels can lead to subtle but significant symptoms, particularly affecting the legs, feet, and sleep. Men may notice numbness, tingling, muscle weakness, balance issues, or restless legs at night. Early recognition of these warning signs is crucial, as prolonged deficiency can result in nerve damage, reduced mobility, and poor sleep quality. Monitoring vitamin B12 intake through diet or supplements and consulting a healthcare provider can help maintain nerve health, energy, and overall quality of life. Vitamin B12 plays several key r

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