Effects of fermented and fiber-rich foods on maternal & offspring microbiome study (FeFiFo-MOMS) — Study design and methods

Background

Recent research underscores the crucial role of the gut microbiota in human health, particularly during states of altered homeostasis, including pregnancy. Additionally, it is not well understood how dietary changes during pregnancy affect the development of microbiomes of both mother and child.

Methods

Here, we describe the study design and methods for our randomized controlled trial, the fermented and fiber-rich foods on maternal and offspring microbiome study (FeFiFo-MOMS). We enrolled 135 women during early pregnancy, randomizing them to one of four diet arms: increased fiber, increased fermented foods, increase in both, and no dietary intervention as a comparator arm. Samples were collected across pregnancy continuing to 18 months post-birth for clinical, microbiome, and immune marker analysis.

Results

Our trial design intended to investigate the effects of dietary interventions—specifically, increased intake of high-fiber and fermented foods—on maternal gut microbiota diversity and its subsequent transmission to infants.

Conclusion

The FeFiFo-MOMS trial was designed to provide valuable insights into the modifiable dietary factors that could influence maternal and infant health through microbiota-mediated mechanisms and examine the broader implications of diet on pregnant mothers' and infants' health and disease.

Clinicaltrials.gov ID: NCT05123612