Drugs can be divided in to which is not good for the health at all and which has a minor positive affects. Why I say like that is mendicants use some drugs to make medicines. But when taking about drugs with alcohol and all it has only adverse consequences. It dies not harm only physically. Also it will cause psychological problems. Physically it will damage the entire body system form brain to down. As a result it will psychologically affect the addicted person by short term and long term memory loss, depression etc.