Thank you for your interest in our study!

We are inviting healthy women 30-50 years old who are not taking any prescription medications other than birth control pills to participate in a feeding study to assess how diet affects the stool microbiome (the bacteria that live in the colon) and other biomarkers (found in blood and urine) in your body. We are comparing the biomarkers of healthy women and women with multiple sclerosis (MS) eating a modified Paleolithic diet and a typical American diet.

This study requires eight visits over 29 days to the University of Iowa Hospitals and Clinics and/or the College of Nursing in Iowa City. Stool, blood, and urine samples will be taken around the time of visits 2-8.

This study is divided into 4 parts:

  1. Days 1-8: Usual Diet Phase 1. You will provide your own food and follow your usual diet.
  2. Days 9-11: Feeding Phase 1 (3-day Standard American Diet). We will provide you with food that is similar to a typical American diet. You will eat only the foods/beverages we provide.
  3. Days 12-21: Feeding Phase 2 (10-day Modified Paleo Diet). We will provide you with food from a modified Paleolithic diet. You will eat only the foods/beverages we provide.
  4. Days 22-29: Usual Diet Phase 2. You will provide your own food and follow your usual diet.

You will receive $30 for each completed study visit, which will be paid to you after you complete your last study visit. If you complete all eight visits you will be paid $240. If you complete fewer than eight visits, you will only be paid for the number of visits that you completed, which means you provided all the necessary study data for that study visit (food records/menus, urine, stool, and blood)

If you are interested, please complete the surveys below to determine if you are eligible for this study.

Please do not close your browser without clicking submit as your work will not be saved. After you complete the questionnaires you will be told whether you have passed the initial screening.

Thank you!

If you have any questions about the study or questionnaire, please contact the study Principal Investigator: Ruth E Grossmann, 319-335-7111.

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