Substance abuse has become a huge phenomenon in India over past two decades. Drug Abuse basically means use of harmful drugs or alcohol for the purpose to alter mood. It affects all segments of society, but it has a huge impact on the youth because of their high level of vulnerability. It is an issue of national importance. It causes serious threats to every society. It deteriorates health, increase crimes, hampers productivity, destroys relationships, and erode social and moral values which results in impediment in the overall progress of that society. Teen substance abuse is problematic on various levels as it encourages teens to indulge into harmful crimes like gambling, pick-pocketing, burglaries and even murders. This blog will discuss about causes and consequences of substance abuse in youths with special reference to India.