Mitochondrial biogenesis aging describes age-related decline in the generation of new mitochondria. Mitochondrial biogenesis is essential for maintaining energy supply, metabolic flexibility, and cellular adaptation to stress. With aging, signaling pathways that regulate mitochondrial formation become less responsive, leading to reduced mitochondrial number and quality. This decline compromises cellular energy production and increases vulnerability to metabolic stress. Reduced mitochondrial biogenesis aging contributes to muscle weakness, neurodegeneration, immune dysfunction, and overall functional decline. Impaired renewal of mitochondria also limits the ability to replace damaged organelles, accelerating bioenergetic failure. Understanding mitochondrial biogenesis aging highlights the importance of maintaining mitochondrial turnover to preserve cellular function and healthspan during aging.
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