After Clarice and the others like her, the Peloran spread out the treatments.  The health treatments infants, boosted every couple years.  The final anti-aging treatments came later.  Of course the two are more closely related than most think.  Still, they held off the final treatments until all of us had a chance to grow up.  For men they picked twenty-five years, twenty-three for women.  Mixing the energy of youth with the maturity of age.  Or so goes the theory.