Why Some People Age Slower Than Others — The Cellular Explanation.
Introduction: Aging Is Not Just About Time Why do some people look decades younger than their birth certificate suggests? Why does one 65-year-old run marathons while another struggles with chronic fatigue, metabolic disease, and inflammation? The answer lies not in cosmetics or luck, but inside the cell. Modern longevity science shows that biological aging is driven by specific cellular mechanisms. These include mitochondrial decline, DNA damage accumulation, telomere shortening, chronic inflammation, epigenetic drift, and loss of metabolic flexibility. Some individuals age slower because these systems remain stable longer. The difference is measurable at the molecular level. Key insight: Chronological age counts birthdays. Biological age reflects how well your cells function. 1. Mitochondrial Efficiency: The Cellular Power Advantage Mitochondria produce ATP, the molecule that powers cellular activity. As mitochondrial efficiency declines, energy production dr...