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NAD⁺ (Nicotinamide Adenine Dinucleotide) is a vital coenzyme found in all living cells. Its key functions include:
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- Energy production: NAD⁺ plays a central role in cellular respiration by transferring electrons in processes like glycolysis, the TCA cycle, and oxidative phosphorylation, ultimately helping cells generate ATP.
- DNA repair and genomic stability: It serves as a substrate for enzymes such as PARPs, which are crucial for repairing damaged DNA and maintaining genome integrity.
- Anti-aging research: NAD⁺ activates sirtuins (“longevity proteins”) that regulate gene expression, metabolism, and inflammation, making it a major focus in studies related to slowing down aging.
- Neuroprotection: Adequate NAD⁺ levels support neuronal energy supply and may offer protective effects in neurodegenerative conditions such as Alzheimer’s and Parkinson’s disease.
- Metabolic and immune regulation: NAD⁺ helps maintain insulin sensitivity, supports mitochondrial function, and is involved in modulating immune cell activity.
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