Figure 1. The causal effect of gut microbial genera on RDP (GR, PE, and Eclampsia) identified at the nominal significance by using the IVW method (P < 0.05 / 0.01). Red represents the risk factors for RDP, blue represents the protective factors for RDP, and white represents no causal association. RDP, hypertensive disorders in pregnancy; GR, gestational hypertension; PE, pre-eclampsia; NS, No significant association.