All Addicts, with frequency evolve around aggression, public disorder, racial conflicts, margination, etc.
When an addict starts to need more of drugs than of people, they can destroy and ruin personal relations and even loose friendships.  The addict can stop participating with the world around them, abandon goals and plans, stop growing as an individual, stop trying to resolve problems in a constructive way and recur to the use of more drugs as a “solution”

The abuse of drugs can also put into jeopardy others around them, the money that is used to pay for the drugs could have been used to satisfy family needs like food o clothing.  Discussing the problems and situations of the addiction generates family conflicts.  Violent reactions to the drugs could make the user commit delinquent acts.  If a pregnant woman uses drugs without the control of a doctor it could provide to a genetic malformations of the fetus.