Study Reveals Young Adults' Perceptions of Ultra-Processed Foods

Ultra-processed foods represent over half of the calories consumed by Americans at home, with young adults consuming these foods in the highest proportion. A recent study from researchers at the University of Rhode Island’s College of Health Sciences sheds light on the understanding of ultra-processed foods among this demographic.

Kathleen Melanson, the principal investigator and a nutrition professor at URI, emphasized the significance of studying young adults, noting that while they have a lower incidence of chronic diet-related diseases, their dietary habits during this stage can influence long-term health outcomes. The study, led by then-doctoral student Alexandra Larcom and published in the Journal of Nutritional Science, was the first mixed-methods exploration of young adults’ perceptions of food processing.

Data was gathered from 422 respondents aged 18-39 between October 2023 and April 2024. Participants defined ultra-processed foods and categorized 24 commonly consumed items as either ultra-processed or non-ultra-processed. They also expressed their confidence in these classifications and the criteria used for their evaluations.

The research included a diverse assortment of foods from six categories: fruits, vegetables, grains, proteins, dairy, and sweets/snacks. Larcom highlighted that the selection comprised both widely available packaged foods and some regional brands.

Unexpectedly, some nutritional ratings provided by respondents contrasted with established benchmarks like Food Compass scores. For instance, items such as sausage, pretzels, and chocolate milk were rated higher in nutritional value compared to healthier options like salad mix and yogurt. Larcom speculated that marketing tactics, such as promoting chocolate milk for sports recovery and emphasizing protein intake, could influence these perceptions.

Participants averaged a score of 67% in identifying ultra-processed foods, reflecting a general lack of understanding. Their definitions incorporated various factors, including ingredients, processing extent, and nutritional content. Notably, 25% of definitions mentioned specific ingredients, while others focused on processing methods and nutritional value.

Melanson noted that the survey results indicated a significant gap in public information regarding ultra-processed foods. At the time of the study, efforts were still ongoing in the U.S. to solidify a clear definition.

The survey cohort was predominantly female (74%), with 82% identifying as Caucasian and coming mainly from the northeast and mid-Atlantic regions. Larcom concluded that while there is limited consensus on defining ultra-processed foods among young adults, further research is necessary across different U.S. regions and age groups, as children and adolescents are also heavily targeted by marketing of these foods.

The research team also included Ingrid Lofgren, Matthew Demonico, and Amanda Missimer.