The signs of addiction affect far more than just the addict, themselves. 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 arrangement is about those individuals who are influenced in the life of someone who is addicted.
It is because friends want an ability to have natural relationships with their friends. However, they can be led down to the path of addiction due to this pressure towards substance abuse, as well, which will make recovery more difficult for both parties. This is one of the more infectious characteristics 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.
It is possible that the new friends you acquire comprise the drug tradition that initially lead you to addiction, which makes more difficult because it makes it harder for you to establish new and responsible relationships that may help you.