Sirtuin pathways aging describes age-associated decline in activity of sirtuin enzymes that regulate metabolism, stress resistance, and genomic stability. Sirtuins respond to cellular energy status and modulate transcription, mitochondrial function, and DNA repair. With aging, reduced sirtuin activity weakens cellular maintenance systems. Sirtuin pathways aging contributes to metabolic imbalance, inflammation, and reduced stress tolerance. Understanding sirtuin pathway decline provides insight into how energy sensing and repair coordination deteriorate during aging.
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