Does taking powdered creatine monohydrate affect young teen health?

It can!: Creatine supplementation is safest when used after puberty. Young bodies are still developing and are more susceptible for to strain and injury while using creatine supplements. They are also at a higher risk of kidney damage if they use it on a consistent basis. Teens may not use creatine responsibly and use should be closely monitored by an adult if used at all.