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it can affect your hormones and the way that you grow up, it causes early puberty affects like facial hair and can some times end in sex related symptoms for example if you are a guy you can grow boobs and your penis and testicls to not function or shrinken or if you are a girl you can grow facial hair loose your boobs and in severe cases grow parts that guys grow
Neuron
Abusing anabolic steroids can have horrible health effects for teens. While on the one hand it can positively affect their muscle growth, it can, on the other hand, negatively affect the growth of their muscles as boys and men many develop gynecomastia. It may also negatively influence their hormonal balance in a rather delicate age when they are still growing up.