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Older Adults: The ability to absorb B12 decreases with age

Medical Disorders People who have liver disorders often have difficulty storing vitamin B12, so it is quickly absorbed into the body rather than stored for later use

Homocysteine Vitamin B12 deficiency leads to the accumulation of the amino acid homocysteine in the blood

Treatments are usually administered over several weeks to gradually restore NAD+ levels while supporting metabolic balance

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Key Factors That Influence Recovery Severity of deficiency: Lower levels may take longer to correct