Sugar is a highly refined substance that doesn't appear alone in nature. It appears a lot like cocaine, and sugar behaves a lot like heroin when it arrives at the brain. While the idea that sugar was addictive was controversial amidst scientists for years, they started to take note when a notable was published in the Journal of Nutrition in 2009.The study demonstrated that sugar impacts the brain chemistry and therefore may be expected to induce addictive behavior. In the study, it was demonstrated that sugar binging may cause withdrawal symptoms and cravings.