This study is looking at how eating different amounts of ultra-processed foods affects how your body uses and stores energy. Researchers will compare a diet where 80% of calories come from ultra-processed foods with a diet where only 20% of calories come from these foods. They want to understand why diets high in ultra-processed foods might lead to weight gain. You may be able to join if you are between 25 and an unspecified age, have obesity (a body mass index, or BMI, between 30-40 kg/m2), and are generally healthy. The main goal is to measure the energy content in your stool (fecal energy loss) after two weeks on each diet. The current recruitment status is unclear.

Study design

This interventional study plans to enroll 20 participants. Each participant will try both the 80% ultra-processed food diet and the 20% ultra-processed food diet.

What's involved

You will have an initial blood draw, a metabolic test, and a body composition test. You will also meet with a dietitian and collect stool samples. The study involves two 2-week diet phases, with a break in between, and will take about 9 weeks in total.

Compensation

Not stated in the trial record.

Follow-up

The primary outcome, fecal energy loss, is measured at 2 weeks after each diet phase. The study duration is approximately 9 weeks.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.