How does fasting during Ramadan affect your vaginal and gut microbiome?

Did you know that what you eat not only affects your gut microbiome but may also influence your vaginal microbiome? In this daughter study of Isala, we investigate the impact of Ramadan fasting on both the vaginal and gut microbiome, and how they interact with each other. Would you like to learn more about your microbiome and how your diet influences it? Read more about the Rufaida project here!

For group 1 of this study, we are looking for participants:

  • 18 years or older
  • Proficient in Dutch
  • Not pregnant
  • Not breastfeeding
  • Willing to bring samples toour Isala lab in Antwerp at four different time points

For group 2 of this study, we are looking for participants:

  • 18 years or older
  • Proficient in Dutch

What do we expect from you?

The study begins on February 17, 2025. In this study, we will examine two study groups. If you register for Group 1, you will collect weekly vaginal and stool samples for eight consecutive weeks. You can pick up your sample collection kit the week before the study begins (February 10–14). Additionally, you will be asked to complete a detailed weekly questionnaire about your vaginal, gut, mental, and overall health, as well as your diet in the past days. At four specific time points, you will also be asked to take an extra vaginal and stool sample. After collecting these samples (marked as purple time points in the figure below), we will gladly welcome you at our lab in Antwerp to drop them off. If you register for Group 2, you will receive a weekly questionnaire for eight weeks about your vaginal, gut, mental, and overall health, as well as your diet in the past days.

The samples under the magnifying glass

As soon as we receive the samples in our lab, our enthusiastic team of researchers gets to work right away! In this study, we analyze the microbiome of your vagina and gut at all different time points. This allows us to compare the periods before, during, and after fasting. Our goal is to identify which bacteria become more or less prevalent while fasting. Additionally, we want to investigate whether there is a link between your diet and the bacteria present in the vagina. To uncover this, we carefully examine your questionnaire responses alongside your samples to identify possible connections. We are also interested in the effects of Ramadan on mental health and the sense of togetherness.

Our enthusiastic team of researchers!

Behind every study is an enthusiastic team of researchers! Sarah Van den Bosch, a PhD student, is leading this sub-project of Isala with the help of Dr. Sarah Ahannach (who has been involved from the start of Isala). Of course, they can count on familiar Isala faces such as Professor Sarah Lebeer (the one and only!), Professor Veronique Verhoeven (Isala’s doctor), and Professor Charlotte de Backer (the expert in communication sciences). They are supported by Isabel Erreygers and Inas Rahou! As always at Isala, the motto is: Teamwork makes the dream work! 🙂 We would also like to thank Biocodex Microbiota Foundation Belux for the grant that makes it possible to launch the second phase of the Rufaida project!

Registrations are closed for this study!