In some news which may be depressing to immortalists but not surprising to most physicists, the claims by some transhumanists of immortality are incorrect. To put it another way, unless consciousness can be extracted physically and moved from one body to another it is not possible according to the math to stop the body from aging.
There is an inverse relationship where if you find a way to remove cell senescence you also increase the risk of cancer. What isn't known is why some species like turtles or lobsters do seem to live nearly forever. Why doesn't the math work with all species in the same way or if it does then what is slowing the rate of aging in some of these non-human species?