Study on Reducing Ultra-processed Food Intake to Improve Blood Sugar Control in Healthy Korean Adults Aged 20 to 39

What this Trial Is About

Researchers are investigating if reducing ultra-processed food intake can improve blood sugar responses after meals and reduce blood sugar swings in young, healthy Korean adults aged 20 to 39 years. This trial compares a special dietary counseling focused on lowering ultra-processed foods with standard nutrition education based on national guidelines. The study aims to provide evidence on how cutting back on ultra-processed foods affects metabolism and may help prevent diabetes in younger adults. Participants first wear a continuous glucose monitoring CGM device for 10 days while recording their diet and lifestyle habits. Then, they are randomly assigned to one of two groups the intervention group receives a 40-minute personalized counseling session aimed at reducing ultra-processed food consumption, while the control group receives standard dietary counseling without focus on ultra-processed foods. After the counseling, participants wear a new CGM device for another 10 days and continue tracking their food intake and lifestyle behaviors. Throughout the study, researchers measure changes in the participants blood sugar levels after meals and overall blood sugar variability by comparing data from before and after the intervention. They also track body weight, waist size, body fat, muscle mass, blood pressure, and handgrip strength from the start to the end of the study, which lasts about 23 days. Participants adherence to recording their diet and lifestyle during both monitoring periods is closely supported by the study team.

Ultra-processed Food-reducing Intervention and Continuous Glucose Monitoring