The author uses his knowledge of the human brain to emphasize the importance of "endorphins" during growth and how the lack of chemicals "in early childhood and early childhood, [creates a greater need] for external sources” (289) such as medications. Along with his scientific evidence, Mate also uses the traumatic childhood experiences of many of his patients, such as "dishwashing liquid poured down his throat...". . . and was tied to a chair in a dark room to control his hyperactivity” (289). These patients help create a picture for readers to understand the feelings and faces of drug addicts in their childhood, which leaves them feeling abandoned and neglected by the rest of the world. Mate even analyzes the fact that addicts may come from a home where there is no abuse and parents do their best to provide them with a loving and caring home. The problem in families like this is often that one parent is the one who has had a traumatic experience in their childhood and is not able to convey appropriate love to their child, because they miss them- even this feeling. The author uses the strategy of examining both the child's and the parents' experiences to show that the root problem stems from the same outcome, wanting to feel "unconditionally [loved and to be] fully accepted, even in moments the most unpleasant ».”