For my own reference, here's Aubrey de Grey's site on Strategies for Engineered Negligible Senescence.
SENS is a detailed plan for curing human aging. SENS is an engineering project, in the same way that medicine is a branch of engineering. The key to SENS is the appreciation that aging is best viewed as a set of progressive changes in body composition at the molecular and cellular level, caused as side-effects of essential metabolic processes. These changes are therefore best thought of as an accumulation of "damage", which becomes pathogenic above a certain threshold of abundance.
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