Lifespinners by Lynn Watson
In 2048, medical science has overcome all the diseases and limiting conditions of old age. In the exclusive community of Wellowfern, radical life extension has turned from distant dream to near reality and competing forces are lining up to impose their widely different visions of the future. Isabel is a loyal and influential resident who knows about corporate intrigue and the power of self-interest. She now has to figure out who is pulling the strings, which side she is on and how best to defend her safe haven and her eccentric, misfit friends, as the high-level infighting threatens to overwhelm them.