On the other hand, research shows that "genetic disease is more likely in the children of older fathers".
Therefore, to ensure mature partner choices, marriage should be delayed. But to avoid the likelihood of genetic diseases of the offspring, marriage should happen earlier in one's life.
The dilemma can be solved by applying the Separation in Time principle: marriage is delayed (best time to choose a mate), but sperm and eggs are selected and tested way before marriage (best time to get the genetic material).
One implementation of the solution, e.g. by using frozen eggs, got a boost from a recent study:
It's highly likely that future babies will be born to older parents using their "young" genetic material.
problem, solution, dilemma, separation, health