You could really take a Primate line, change their lifestyle and get a new protohominid from the next few generations.
The electrical activity in the atomic orbitals of the molecules of the DNA in our reactive nervous tissue does get mitigated post-morten but the cells don't actually stop reproducing. It's safe to assume that the cells die and procreate faster and shorter than the organism they compose and that has to do with your overall lifespan.
However, as trauma can effect memory function it is a matter of fact that death is caused due to the limit of information in the form of memory that the mind can old.
And obviously if we can predict the weather a day or two in advance we have the tech for future predictions (quantum computers) already.
People have always been trying to defy their fates. Even the Church is no different than your 'scientific authorities'.