There are literally hundreds of studies on the association between the chemicals found in found and the addictive behaviours they can cause. Always be aware of what you are eating. Enjoy.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2892765/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2235907/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4334652/
https://www.ncbi.nlm.nih.gov/books/NBK279984/
http://www.cbc.ca/news/health/food-cravings-engineered-by-industry-1.1395225
http://articles.mercola.com/sites/articles/archive/2012/12/04/saccharin-aspartame-dangers.aspx
www.mikedaciuk.com