You might want to talk with Schrödinger about that. A little journey with his mistress in the Alps seemed profitable enough to me to science.

As you can read on his website or in his book, de Grey is focusing on extending healthy life, not on simply adding decades of illness. Most of the approaches he discusses mainly deal with the age-related diseases' damage done to the organism, which seems to be often (if not always) the cause of both debilitating effects and death.