This study aims to better understand how much iron adults in the US need in their diet. Current guidelines are based on studies in European populations, and this research will help update them for the US. You might be able to join if you are between 18 and 50 years old, male or a premenopausal female, and have either participated in a previous iron study or are willing to take a stable iron isotope (a safe, non-radioactive form of iron) and wait a year for it to settle in your body. You'll also need to avoid iron supplements and smoking during the study. The main goal is to measure the iron isotope levels in your blood after 12 weeks to see how your body uses iron. The study is currently unclear on its recruitment status, but plans to enroll 300 people.

Study design

This is an interventional study planning to enroll 300 participants. It uses a stable iron isotope to determine iron requirements.

What's involved

You will consume an oral stable iron isotope and undergo a one-year equilibration period. Then, you will be followed for 12 weeks, with blood collected every 4 weeks.

Compensation

Not stated in the trial record.

Follow-up

Your iron isotope composition in blood will be measured at 12 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.