According to a recent study, conceptualizing ultra-processed foods high in carbohydrates and fats as addictive substances could potentially improve global health. The study, led by Ashley Gearhardt, a psychology professor at the University of Michigan, suggests that certain processed foods exhibit addictive properties, leading to behaviors similar to substance use disorders. These behaviors include a lack of control over intake, intense cravings, withdrawal symptoms, and continued use despite negative consequences. The researchers argue that by identifying these addictive foods, we can better address public health concerns such as obesity, binge eating disorder, and overall lower quality of life.
One of the challenges in addressing food addiction is determining which foods have the highest potential for addiction and why. The study reviewed 281 studies from 36 different countries and found that ultra-processed food addiction affected approximately 14% of adults and 12% of children. The researchers highlighted that not all foods have the potential for addiction. Foods that are minimally processed and provide energy in the form of either carbohydrates or fat, but not both, are less likely to be addictive. For example, an apple has a carbohydrate to fat ratio of roughly 1-to-0, while a chocolate bar has a 1-to-1 ratio, potentially increasing its addictive potential.
Aware of the gaps in knowledge surrounding food addiction, the researchers call for further study into various aspects. This includes understanding how complex features of ultra-processed foods contribute to their addictive potential, defining which foods are considered addictive, studying differences among communities and countries, addressing disadvantaged communities, exploring the value of public-health messaging, and developing clinical guidelines for prevention and treatment of food addiction.
Although the parallels between addictive substances and ultra-processed foods are evident, critics have questioned the lack of identified addictive chemicals in foods. While refined carbohydrates and fats do not directly act on reward systems, they seem to activate neural reward systems similar to substances like nicotine and ethanol. However, the presence of an addictive chemical alone is not enough to determine addiction potential, as some non-addictive substances may contain addictive chemicals in low doses. Further research is needed to investigate how the different ingredients in ultra-processed foods interact to increase addictive potential.
In conclusion, the study emphasizes the need for a better understanding of food addiction and its implications for public health. By identifying and addressing addictive foods, we can work towards a healthier future. With ultra-processed foods contributing to a significant portion of calorie consumption, it is crucial to continue studying this topic to develop effective strategies for prevention, treatment, and management of food addiction.