Sugar is a large problem across the world. Sugar is noteworthy as a substance that releases opioids and dopamine which might be expected to have addictive potential. Which makes “Food addiction” seems plausible because brain pathways that evolved to respond to natural rewards are also activated by addictive drugs. The evidence supports the hypothesis that under certain circumstances rats can become sugar dependent. This may translate to some human conditions as suggested by the literature on eating disorders and obesity.
According to research from Queensland University of Technology, a lot of sugar consumption increases the dopamine levels in a similar way to other drugs such as cocaine. The study found that long-term consumption