SENS Framework

Right, the SENS framework treats aging as an engineering problem rather than a biological mystery. We've identified seven categories of damage that accumulate with age, and for each one, we've mapped out repair strategies. The seven damage types are: cell loss and atrophy, senescent cells, mitochondrial mutations, nuclear DNA mutations (cancer), intracellular junk, extracellular aggregates, and extracellular crosslinks. The beauty is we don't need to understand every detail of how damage arises - we just need to repair or remove it periodically. Take senescent cells, for instance. Recent work shows that even small numbers of these zombie cells can drive systemic dysfunction and accelerate death in mice. The senolytic combination of dasatinib plus quercetin selectively eliminates them, reversing functional decline and extending remaining lifespan when administered intermittently. What's particularly striking is how senescent immune cells act as propagators - they're vulnerable to DNA damage, and once senescent, they spread dysfunction to multiple non-lymphoid organs through SASP-mediated inflammation. This exemplifies the SENS approach perfectly: identify the damage (senescent cells), develop the repair strategy (senolytics or immune cell replacement), and apply it periodically. We're not trying to slow damage accumulation - we're removing it after it forms. The potential? Once we can repair damage faster than it accumulates, we achieve longevity escape velocity. Each intervention buys time for better interventions. Our RMR studies show combination therapies already extending mouse lifespan significantly. I predict we'll achieve LEV in humans within 15-20 years given proper funding. The engineering approach works - we just need to implement it comprehensively across all seven damage categories.