Virginia Tech Researchers Discover Ultraprocessed Foods Alter Metabolic and Brain Responses
Researchers at Virginia Tech have found that ultraprocessed foods elicit different metabolic and brain responses compared to minimally processed foods, even when matched for nutritional value. The study, published in Nature Metabolism, involved nearly 60 healthy adults aged 18 to 45. Participants consumed either a highly processed meal (e.g., peanut butter and jelly sandwich, deli turkey, chips, cookie) or a minimally processed meal (e.g., banana, dried cranberries, cheese, hard-boiled egg), with both meals having identical caloric, carbohydrate, fat, protein, water, and salt content. The findings revealed that those who ate the highly processed meal experienced a significantly higher insulin response and sustained elevated blood sugar levels for a longer duration. Separately, brain scans showed that regions associated with motivation and reward responded differently when participants viewed images of ultraprocessed foods versus minimally processed foods, suggesting the brain encodes the value of these foo...