The Millennium Cohort Study is committed to the long-term health and well-being of both current and former service members. At this time, participants can still complete their survey online. However, due to the COVID-19 pandemic, the paper survey mailing date has been delayed. For updates on COVID-19 and tips on staying safe, please visit
In the News
CNN Logo
Forbes Logo
MDLinx Logo
MedicalXpress Logo
UT San Diego Logo

Click on logos to view content associated with the Millennium Cohort Study

The appearance of hyperlinks does not constitute endorsement by the Department of Defense of non-U.S. Government sites or the information, products, or services contained therein. Although the Department of Defense may or may not use these sites as additional distribution channels for Department of Defense information, it does not exercise editorial control over all of the information that you may find at these locations. Such links are provided consistent with the stated purpose of this website.

Message from the Team

Below are some of the most common questions about the study:

Why is the Millennium Cohort Study being conducted? What is a cohort? READ MORE

Why was this study created and by what authority? READ MORE

Will any members of my Chain-of-Command or Promotion Boards ever see the information that I provide on the questionnaire? READ MORE

How will my participation in this study make a difference? READ MORE

Other questions not listed here? Or would you like to update your contact information? Please contact us. We'd love to hear from you.