One research study found that when a recovered heroin abuser returned to the neighborhood where he had previously used heroin, he experienced nausea and other withdrawal effects. This research supports the idea that may be a significant factor in the development and maintenance of substance addiction.

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )

answer; elasticity of the lungs decreases;