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A 2021 review in Nature Reviews Molecular Cell Biology describes a gradual drop in tissue and cellular NAD+ across aging in rodents and humans, and links that fall to metabolic disease, cognitive decline, and sarcopenia [1]

This impairment of DNA synthesis affects the rapidly dividing cells of the bone marrow earlier than other cells, resulting in the production of large, immature, hemoglobin-poor red blood cells (macrocytosis), as well as effects on white blood cells, including abnormal (hypersegmented) neutrophils and reduced overall cell counts (pancytopenia)

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Overall Wellbeing Vitamin B complex injections support multiple systems in the body, helping to maintain healthy skin, hair, and nails while also boosting circulation

Hou, X., Rooklin, D., Fang, H

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