Volunteers needed for a study evaluating the effects of wild blueberries on older male BP

by Sarah A. Johnson, Ph.D., RDNBlueberries

The Functional Foods & Human Health Laboratory in the Department of Food Science and Human Nutrition at Colorado State University is currently seeking men to participate in a research study investigating the effects of wild blueberries on blood pressure and vascular health.

If you would like to join our study, please complete this survey: Volunteer Study Survey

For more information about the study, please contact the Functional Foods & Human Health Laboratory via:

Who can participate?

  • Men between the ages of 45-70 years
  • Slightly elevated blood pressure or stage 1-hypertension
    • Systolic blood pressure (top number) between 120 and 140 mmHg, and/or diastolic blood pressure (bottom number) between 80 and 89 mmHg
  • Other inclusion and exclusion criteria apply and will be evaluated through phone and in-person screening

Benefits Include:

  • Measures of blood pressure and cardiovascular health, including vascular (blood vessel) function
  • Monetary compensation up to $200 for participation

What is involved?

Participants will be asked to consume a randomly assigned treatment daily for 12 weeks (either 22 g freeze-dried wild blueberry powder, or 22 g placebo powder). Participants will complete initial screening tests and qualified participants will undergo cardiovascular testing and provision of samples such as blood and urine. Involvement in the study will last 12 weeks and involvement will consist of 4 test visits over this period (visits last between 45 minutes and 1.5 hours). Participants will receive financial compensation of up to $200 for their time. The study will take place on the CSU campus in the Department of Food Science and Human Nutrition.

COVID-19: Please note that your health, and the health of our staff, is very important to us. To ensure everyone stays safe, we have implemented COVID-19 safety and prevention procedures, such as COVID screening questionnaires, use of face masks, enhanced cleaning and disinfecting procedures, and limiting staff interactions. If you have any questions regarding the totality of our procedures, please contact us at 970-491-0464 or email: FunctionalFoodsLab@colostate.edu.

In addition, for the safety of our staff we are limiting time spent on campus, but staff will be available Monday, Tuesday, and Thursday mornings (8:00 am – 12:00 pm) to answer/make phone calls. However, staff will be checking email and responding to emails Monday through Friday. We will respond to your call as soon as possible by phone and/or email.

The Principal Investigator is Assistant Professor Sarah A. Johnson, Ph.D., RDN of CSU’s Department of Food Science and Human Nutrition. She can be reached at Sarah.Johnson@colostate.edu or (970) 491-3807.

This research study has been approved by CSU’s Institutional Review Board, Protocol # 19-8784H. The Functional Foods & Human Health Laboratory is located in the Department of Food Science and Human Nutrition.

The Department of Food Science and Human Nutrition is part of CSU’s College of Health and Human Sciences