The technology does exist, although it is in experimental stages. At the tip of the chromosomes in a cell are little "caps" called telemeres. Each time a cell divides, a small piece of this cap breaks off until it reaches a critical level so that the cell can no longer divide leading to cell death aka "senesence".
This is essentially the internal clock. It has recently been discovered that there is a cellular peptide called telemerase that causes telemeres to rebuild themselves. We all have a latent gene that produces this peptide.
The trick is how to activate it. There are currently two methods. There is a company based out of New York called TA Sciences that have found a compound that will activate this gene.
The downside is that is it a pill that must be taken on an ongoing basis and it is very cost prohibitive at about $25,000 a year. There is a second method being researched that would infuse Telemerase into a cell directly, but this is proving dificult because of the nature of the human cell. The cell surface will only allow very tiny molecules through it's membrane where telemerase is a very large molecule, so you couldn't get injections because it would never make it inside the cell.To that end, there is research on how to attach smaller molecules to telemerase to fool the cell membrane in allowing it to pass.
Even if that method is perfected, it will also be an ongoing treatment to retain youth. So yes, the technology exists - it's just not cost effective - yet.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.