How do you change your sims age on The Sims 2?

Answer 1

go to the cheat mode and do "boolProp TestingCheatsEnabled true" and then hold shift and click on your sim. Then click "spawn"

when you click on spawn it will have some choices press more until you find "sim modder" then a standing baby then click on it and it will say "set age" and many more click on "set age" and it will give you 5 choices "toddler, child, teen, adult, and elder" and then click which one you want.