Probiotic Supplementation During Pregnancy in Women With High-Risk Pregnancies

This study is testing whether taking probiotic supplements (beneficial bacteria) during pregnancy can help reduce the risk of preeclampsia — a dangerous condition involving high blood pressure that can develop during pregnancy. **You may be eligible if...** - You are pregnant and at least 18 years old - You are at high or moderate risk of developing preeclampsia (due to factors like a previous history of preeclampsia, diabetes, chronic high blood pressure, or being pregnant through egg donation IVF) - You are able to give written consent **You may NOT be eligible if...** - You are already enrolled in another clinical study - You have taken probiotics in the last 2 weeks or antibiotics in the last 6 weeks - You have an immune system condition, inflammatory bowel disease, celiac disease, or diabetes - You are currently taking metformin, progesterone, or other medications that could affect the study results Talk to your doctor to see if this trial is right for you.