Drugs are chemical substances that have biological effect on us.

Drugs causes LIVER and most serious hepatitis arise from that.
Drugs will  beat all the nervous system of your mind so you can not think, speak or walk normally..
Drugs can causes eye diseases and your sight will let down by these..
Drugs causes your mouth cells and teeth badly..

No one will respect you in that society.. no one will trust you specially for borrowing money, no one will make relation with you..

So just say NO to drugs and avoid your self from these bad things..