STUDY QUESTION: To what extent is male physical activity (PA) associated with fecundability (per-cycle probability of conception)? SUMMARY ANSWER: Preconception levels of vigorous, moderate, or total PA were not consistently associated wit…
OBJECTIVE: To describe the prevalence and treatment characteristics of assisted reproductive technology (ART) cycles involving specific male factor infertility diagnoses in the United States. DESIGN: Cross-sectional analysis of ART cycles …
PURPOSE: Excess embryos transferred (ET) (> plurality at birth) and fetal heartbeats (FHB) at 6 weeks' gestation are associated with reductions in birthweight and gestation, but prior studies have been limited by small sample sizes and limi…
STUDY QUESTION: What is the association between ART conception and treatment parameters and the risk of birth defects? SUMMARY ANSWER: Compared to naturally conceived singleton infants, the risk of a major nonchromosomal defect among ART s…
BACKGROUND: Although in vitro fertilization has been associated with an increased risk for hypertensive disorders of pregnancy, the association of risk with in vitro fertilization treatment parameters is unclear. OBJECTIVE: To evaluate ris…
STUDY QUESTION: Is female infertility associated with higher risk of cancer? SUMMARY ANSWER: Although absolute risks are low, infertility is associated with higher risk of cancer compared to a group of non-infertile women. WHAT IS KNOWN A…
STUDY QUESTION: Does the fertility status of an individual act as a biomarker for their future health? SUMMARY ANSWER: Data support an association between reproductive health and overall health for men and women. WHAT IS ALREADY KNOWN: Va…
We studied a prospective cohort of 434 couples in Northern California and found that 13% did not pursue any form of infertility treatment after their initial consultation. Although age, education, and financial concerns remain important for…