The occurrence of miscarriage signifies a significant loss during pregnancy, profoundly affecting many women internationally. The intricate and multifaceted nature of miscarriage causes has led recent investigations to propose that vaginal microbiota may be a contributing factor. A diverse array of microbes constitutes the vaginal microbiome, which plays a vital role in safeguarding vaginal health and reducing the risk of infections. The link between the vaginal microbiome and miscarriage is not yet fully understood. The gut microbiome also serves as a recognized supporting organ, reflecting its many relationships with the overall health of the host individual. Moreover, adverse effects on the microbiomes present in various body systems can significantly compromise overall health. The characterization of microorganisms, known as the microbiota, in relation to human health has involved exploring which organisms exist, how they function in interaction with human cells, and the mechanisms that govern these interactions. The purpose of this review is to investigate how distinct microbiota may influence the risk of miscarriage. Moreover, our research delves into the multiple mechanisms through which maternal blood disorders can impact the likelihood of miscarriage, also looking into the known connections between microbiota and humans, with an emphasis on their impact on blood disorders.
Keywords: Bacterial infection; Blood disorder, gut microbiota; Hemolytic disease; Miscarriage, vaginal microbiota.
© 2025. The Author(s), under exclusive licence to Springer Nature B.V.