The side effects of drugs and alcohol are creating dangerous impacts not only on you. It is clearly evident that the people close to them, the people concerned about their wellbeing, also experience the pain faced by the addict.
Other devastating behaviour can also be caused by addiction to both (to themselves and others).
Addicts causes relationships to wear away and once the addict is on this slippery slope, coming back up is much harder. This article as well as the others in this sequence tackles the impacts of addiction not only to the addicts but also to the relationships and people around them.
It is a friendly nature that the friends always wish to be able to relate to their other friends. Sadly, this simple behavioural observance leads to a more harmful situation and often ends with full-blown addiction. This is the most infectious aspects of addiction.
The circle of people you consider to be your friends will start to change slowly as addiction takes control of your life. The risk of this situation, in the case of an addict, is that this new group of friends may be an outcome of bad drug habits.
New friends may be a part of the drug culture that made you addicted in the first place, which would be devastating for recovery, as it makes it much more hard to create new, more meaningful relationships that could actually help you.