How Do Drugs effect your body?

How do drugs effect your body i would say it depend on the drug you use. there are lots of illegal in the world that people use that are bad for them . the illiegal drugs really effects you body because you want more and more. for example people do all types of illiegal drugs like cocanie,crack,hashish,heroin, marijuana, and many more.those are the drugs that effect the outside of your body and the inside.the appear of your body will not be the same as it was before you was using drugs.in addtion you body will have black mark on your face,arms,legs,and back.also you will feel achy and sore if you dont use the drugs that you body is hooked onto.how do you think drugs are effecting people that use drugs body?