Why We Age: The 12 Hallmarks of Aging Explained

Why do we age—and can we influence how fast it happens? Aging is not caused by one single process. It develops through a network of biological changes known as the “Hallmarks of Aging”—from DNA damage, epigenetic alterations, and mitochondrial dysfunction to cellular senescence, chronic inflammation, and changes in the gut microbiome. In this episode of The Longevist Podcast, I break down: • The 12 Hallmarks of Aging • How they interact and accelerate age-related decline • How cellular aging contributes to organ dysfunction and chronic disease • Which hallmarks may be influenced by lifestyle and medical interventions • Why understanding these mechanisms is essential for designing a longer, healthier life Aging may be inevitable—but the rate and trajectory of aging are not identical for everyone. Understanding the biology is the first step toward moving from reactive healthcare to proactive Longevity Medicine. Watch the full episode: “Hallmarks of Aging: Understanding Why We Age” #HallmarksOfAging #Longevity #HealthyAging #LongevityMedicine #Healthspan #AgingScience #TheLongevist