here’s the link for beautiful boy and tweak is attached as pdf  http://dspace.vnbrims.org:13000/jspui/bitstream/123456789/4432/1/Beautiful%20Boy%20A%20Father%27s%20Journey%20through%20His%20Son%27s%20Addiction.pdf 
8 of the additional resouces 
these helps with question 1
https://learn.genetics.utah.edu/content/addiction/genes/
https://www.niaaa.nih.gov/news-events/announcement/nida-and-niaaa-commentary-strongly-supports-brain-disease-model-addiction 
https://nida.nih.gov/sites/default/files/soa_2014.pdf
question 2 
https://www.ncbi.nlm.nih.gov/books/NBK64258/
https://www.mhanational.org/co-dependency
https://psychcentral.com/health/are-you-an-enabler
https://archives.nida.nih.gov/publications/preventing-drug-use-among-children-adolescents
question 3- i picked food addiction this should help
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6770567/
question 4
https://obamawhitehouse.archives.gov/ondcp/ondcp-fact-sheets/how-illicit-drug-use-affects-business-and-the-economy
https://www.cnbc.com/2021/06/17/the-us-has-spent-over-a-trillion-dollars-fighting-war-on-drugs.html
question 5
https://archives.nida.nih.gov/sites/default/files/podat-3rdEd-508.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4553654/
https://www.huffpost.com/entry/mindfulness-based-relapse-prevention-interview_n_5645fd24e4b08cda3488638b?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAAGUkUxUgKWnV7ouVLKh8aZb-VFPlWBxQOOIobr2hw-gnC38jHiWwi2nHHS8Bh2uzd7TzgUCGArvRc1rawXehwc4WBm06Xh2yaNnGlNPo8uD7bEZBD0pwDpWG3I_QPY9AXWKb3jk6eHrsKyu967ddas8FXgSTC4OxGVcymwlXkFwt
question 6