The Complete Science of Aging: Why Do We Get Old and Can We Stop It?

Every living thing ages. But why? Aging isn't inevitable in physics — it's a biological program, and scientists are beginning to understand — and possibly reverse — it. In this deep-dive video, we explore the full science of biological aging: 🧠 The hallmarks of aging: 12 cellular processes that degrade over time 🧤 Telomeres: the 'caps' on your chromosomes that shorten with every cell division 🔬 Senescent cells: 'zombie cells' that stop dividing but refuse to die, poisoning their neighbors ⚡ Mitochondrial dysfunction: how your energy factories decline over time 📊 Epigenetic drift: how gene expression patterns become corrupted with age 🧬 The science of longevity: caloric restriction, senolytics, sirtuins, Yamanaka factors 🔬 Cutting-edge research: can aging be reversed? What clinical trials are showing This video will change how you think about getting older — and what might be possible in the next 20 years of science. 📌 Subscribe to KnowIt for weekly science deep-dives! 💬 How old do you think science will allow us to live in 50 years?