Food addictions are not strictly “psychological” problems, but have a hard-wired, organic component. Many of the most commonly consumed foods in Western culture actually contain narcotic properties associated with the presence of psychoactive chemicals that bind to opioid receptors in the nervous system.
High-fructose corn syrup is the primary source of calories in the United States. In addition to containing mercury, a known carcinogen, cancer cells actually feed on high-fructose corn syrup after it is metabolized by the liver. A recent study, published in the Expert Opinion on Therapeutic Targets, examined the link between refined sugar and cancer.
In September 2013, a bombshell report found that 30%–40% of healthcare expenditures in the USA go to help address issues that are closely tied to the excess consumption of sugar.