Zeina Alkhalaf — Endo Lab

2026

Periconception Maternal-Serum Vitamin D, Vaginal Bleeding, and Subchorionic Hemorrhage in Early Pregnancy.

Nutrients ·doi:10.3390/nu18142339

Background/Objectives: To examine relationships between maternal-serum 25(OH)D levels at preconception and 8 weeks' gestation and the risk of vaginal bleeding and subchorionic hemorrhage during pregnancy. Methods: A secondary analysis of th…

2026

Preconception vitamin D status and subsequent risk of preeclampsia: A secondary cohort analysis from the EAGeR trial.

Pregnancy hypertension ·doi:10.1016/j.preghy.2026.101417

ObjectiveTo evaluate associations between maternal serum 25-hyroxyvitamin D [25(OH)D] measured at both preconception and 8 weeks gestation and the risk of preeclampsia.Study designA secondary analysis of the EAGeR Trial (2006-2012), which w…

2021

Markers of vitamin D metabolism and premenstrual symptoms in healthy women with regular cycles.

Human reproduction (Oxford, England) ·doi:10.1093/humrep/deab089

Study questionAre insufficient 25-hydroxyvitamin D (25(OH)D) concentrations, and other markers of vitamin D metabolism, associated with premenstrual symptoms in healthy women with regular menstrual cycles?Summary answer25(OH)D insufficiency…

2018

Vitamin D is associated with bioavailability of androgens in eumenorrheic women with prior pregnancy loss.

American journal of obstetrics and gynecology ·doi:10.1016/j.ajog.2018.03.012

BackgroundPrior studies have reported mixed results regarding relationships between vitamin D, androgens, and sex hormone-binding globulin in patients with polycystic ovary syndrome. However, less is known regarding these associations in eu…