You can get addicted to doing substance-abuse very easily and it can only bring harm to your body. In some cases addiction can be life-threatening for example in case of an overdose of heroin can stop your breathing permanently. The same goes for alcohol and tobacco which only leads to high blood pressure, heart stroke, and lung problems. As to why we get addicted to these substances ... https://krishnashamuktikendra.com/Nasha_Mukti_Kendra_in_Kullu.html