Baird DD

BACKGROUND: While there is evidence that vitamin D deficiency is associated with long menstrual cycles, delayed ovulation, and reduced fertility, it is yet unknown if increasing vitamin D levels can regulate menstrual cycles, and thus possi…

BackgroundPolycystic ovary syndrome is a common endocrine disorder, characterized by oligomenorrhea and androgen excess. Only a few studies have addressed the natural history of menstrual cycles among women with polycystic ovary syndrome an…

BACKGROUND: Using menstrual products is a part of managing menstrual bleeding. Product use may represent individual, social, and economic influences. A few studies on menstrual product use from specific regions in the United States reported…

Study questionCan algorithms using wrist temperature, available on compatible models of iPhone and Apple Watch, retrospectively estimate the day of ovulation and predict the next menses start day?Summary answerAlgorithms using wrist tempera…

ObjectiveFibroids are hormonally dependent uterine tumors. The literature on adiposity and fibroid prevalence is inconsistent. Previous work usually combined all those with a body mass index (BMI) ≥30 kg/m2 into a single category and relied…

Published associations between combined oral contraceptive use and uterine fibroid development have lacked prospective imaging with ultrasound to distinguish between incident and prevalent fibroids. The Study of Environment, Lifestyle, and …

BACKGROUND: Use of menstrual tracking data to understand abnormal bleeding patterns has been limited because of lack of incorporation of key demographic and health characteristics and confirmation of menstrual tracking accuracy. OBJECTIVE:…

Research questionAre gravidity, parity and breastfeeding history associated with anti-Müllerian hormone concentration among African-American women of reproductive age?DesignThis study included baseline data from the Study of the Environment…

BackgroundMetals may influence reproductive health, but few studies have investigated correlates of metal body burden among reproductive-aged women outside of pregnancy. Furthermore, while there is evidence of racial disparities in exposure…

BackgroundUterine fibroids are highly prevalent, benign tumors. They are the leading indication for hysterectomy, and Black women are disproportionally burdened. Soy-based infant formula contains phytoestrogens, and exposure during sensitiv…

Some studies indicate that Black women have higher exposure to multiple non-persistent endocrine disrupting chemicals (EDCs) than white women, but little is known about correlates of exposure to EDC mixtures. Using baseline data from a pros…

BackgroundProspective longitudinal cohorts assessing women's health and gynecologic conditions have historically been limited.ObjectiveThe Apple Women's Health Study was designed to gain a deeper understanding of the relationship among mens…

BackgroundMobile applications (apps) present a new opportunity to study menstrual cycles and time to pregnancy. Understanding the characteristics of cycle tracking app users is important to evaluate the feasibility of recruiting participant…

BackgroundPhthalates are endocrine-disrupting chemicals that are widely present in consumer products. In the United States, Black women are more highly exposed to phthalates than other racial/ethnic groups, yet information on predictors of …

Scientists from multiple basic disciplines and an international group of physician-scientists from the field of obstetrics and gynecology presented recent studies and discussed new and evolving theories of uterine fibroid etiology, growth a…

BackgroundInjectable contraceptive use is common, with 74 million users worldwide. Use of the injectable contraceptive depot medroxyprogesterone acetate (DMPA) is associated with bone mineral density loss. We hypothesize that increased bone…

ObjectivesTo characterize reasons for hormonal contraceptive (HC) use in 1,455 African-American women, aged 23-35 years.Study designThe community-based cohort members were recruited from the Detroit, Michigan area in 2010-2012. HC history w…