How Different Diets Affect Weight and Health

This small pilot study is testing whether eating ultra-processed foods (like packaged snacks, frozen meals, and soft drinks) affects your health differently than eating a diet with fresher, less processed foods. The researchers will provide all your meals for two separate 2-week periods, and measure changes in your weight, blood work, and how your body processes food.

Ultra-processed foods are very common in modern diets, but researchers don't fully understand how they specifically affect weight and metabolism compared to less processed eating patterns. This study aims to explore those effects in a controlled way before planning larger research.