Air pollution may increase spontaneous miscarriage risk, potentially through inflammation. Prior studies are heterogeneous, and none have used a mixtures approach. We used data from participants who conceived in a prospective time-to-pregna…
BACKGROUND: Studies investigating the effects of pain-relieving medication use on conceiving a pregnancy have shown conflicting results. Furthermore, no previous study has examined medication use around ovulation or implantation and the ass…
STUDY QUESTION: Is pre-conception 25(OH)D associated with the per cycle probability of conception, i.e fecundability, in a prospective cohort study? SUMMARY ANSWER: There are suggestive associations of high 25(OH)D (at least 50 ng/ml) with…
BACKGROUND: Vitamin D insufficiency is associated with subfertility and prolonged estrus cycles in animals, but humans have not been well studied. METHODS: A prospective time-to-pregnancy study, Time to Conceive (2010-2015), collected up t…