Addiction as a brain disease

According to Inaba and Cohen (2014), most of the current research is based on the concept of addiction as a brain disease. In your own words, describe what this means. Be sure to reference the assigned reading to support your points. Finally, conclude your paper with commentary on the pros and cons of this model.Your paper is to be in APA format, 1-2 pages, and include sources.
Textbook must be one source- Uppers, Downers, All Arounders: Physical and Mental Effects of Psychoactive Drugs, Eighth Edition. Inaba & Cohen, CNS Productions, Inc.
a copy can be found here- https://www.scribd.com/doc/133148656/Uppers-Downers-All-Arounders-7th-Edition-Instructors-Manual