A person sitting inside a crowded bus, drinking coffee and stifling a yawn with a gloved hand, can catch the common cold. The little germs can attach to the coffee cup or the gloves, and they hitch a ride into the person’s mouth and begin to cause serious problems when they have arrived. The person doesn’t really need to do anything at all or have any specific kind of risk factor, in order to develop that cold. A drug abuse issue, on the other hand, can’t be passed through the air like this. In fact, there are several different components that all band together in a case of addiction, and all of the elements have an important role to play in the development of that drug abuse issue. These are just a few of the factors experts say are key contributors to drug abuse.