Lower plasma 25-hydroxyvitamin D is associated with irregular menstrual cycles in a cross-sectional study
Jukic AM, Steiner AZ, Baird DD. Lower plasma 25-hydroxyvitamin D is associated with irregular menstrual cycles in a cross-sectional study. Reproductive Biology And Endocrinology 2015, 13: 20. PMID: 25879830, PMCID: PMC4359493, DOI: 10.1186/s12958-015-0012-5.Peer-Reviewed Original ResearchConceptsIrregular cyclesUsual cycle lengthMenstrual cycle characteristicsUterine Fibroid StudyAge of menarcheCurrent smokingGynecologic historyHormonal contraceptionVitamin DMenstrual cyclePhysical activityBlood samplesCycle disturbancesHealth plansTelephone interviewsAlcohol usePlasma samplesWomenHuman dataCycle lengthAgeLow levelsCycle characteristicsMedicationsMethodsWomen