Could also positively affect offspring if spermatogenesis is blocked at the right step, stopping the gamete progenitors from accumulating somatic mutation. The

Could also positively affect offspring if spermatogenesis is blocked at the right step, stopping the gamete progenitors from accumulating somatic mutation. The majority of rare genetic diseases arising from de-novo mutations has its origin in the fathers gamete formation (with increasing risk (i.e accumulation of mutations) at older paternal age). Maybe this could block/slow down this process (i.e cell division) and in 20 years all males that still may want to have kids will take a RARα blocker.