Eating a diet chock full o’ vitamins and nutrients has always been important, but now research shows that there could be a link between drug addiction and dietary deficiencies. Carolyn Reuben, a nutrition expert (and the executive director of the Community Addiction Recovery Association in Sacramento, CA) says that the human body can react to certain dietary deficiencies in a manner that can ultimately lead to mood disorders and/or addiction. She and other nutritionists view omega-3 deficiency as part of the problem.