The airplane is possible.
The rain is possible.
Light and Darkness is possible.
To look at one's self as a human being and how we were created and designed we should not cease to be or exist. So the question is about the effects of time, age, wear and tear on the body and how they can be stop or arrested to the point that life is prolonged.
One approach would be to bring together under one roof all the medical sciences known to man from as far back as the history of man goes. Then begin to live under the law of this planet and that LAW is;
LIFE SUSTAINS LIFE IS THE LAW OF THIS PLANET WHEN ONE CAN ONLY CONCLUDE THAT THE PLANET IT'S SELF IS ALIVE.
TO LOVE LIFE IS TO FIND YOUR OWN HAPPINESS AND SHARE THAT WITH AS MANY PEOPLE AS POSSIBLE.