Part 3/15:
De Grey underscores that the core principles governing aging have been known for decades. The key realization is that reversing aging involves repairing damage, not just slowing its formation. Encouragingly, progress over the last 20 years has been steady, with no fundamental theories invalidated or superseded—only refined. Current research is focusing on molecular and cellular damage like senescent cells, mitochondrial dysfunction, and waste accumulation.