Preconception leptin levels and pregnancy outcomes: A prospective cohort study

Maternal Blood Pressure Before Pregnancy and Sex of the Baby: A Prospective Preconception Cohort Study.

BACKGROUND Population-level sociologic studies have suggested that adverse societal conditions may affect fetal viability in a sex-specific manner and thereby modify the ratio of male vs. female babies. This concept suggests that there may exist certain physiologic features in a woman that relate to her likelihood of delivering a boy or girl. We thus established a preconception cohort to prospe...

The Association Between Pre-Pregnancy Body Mass Index and Gestational Weight Gain on Pregnancy Outcomes: A Retrospective Cohort Study

Maternal obesity (Class I-III), gestational weight gain and maternal leptin levels during and after pregnancy: a prospective cohort study

BACKGROUND Maternal obesity is accompanied by maternal and fetal complications during and after pregnancy. The risks seem to increase with degree of obesity. Leptin has been suggested to play a role in the development of obesity related complications. Whether maternal leptin levels differ between obese and morbidly obese women, during and after pregnancy, have to our knowledge not been previous...

Preconception serum DDT and pregnancy loss: a prospective study using a biomarker of pregnancy.

Previous studies of pregnancy losses and 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT) were limited because they did not include losses prior to clinical detection of pregnancy and because exposures were measured after the pregnancies of interest. The authors examined the association of preconception serum total DDT (sum of DDT isomers and metabolites) concentration and subsequent pregnan...

Original Contribution Preconception Serum DDT and Pregnancy Loss: A Prospective Study Using a Biomarker of Pregnancy

1 Department of Environmental Health, Harvard School of Public Health, Boston, MA. 2 The Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA. 3 Institute for Biomedicine, Anhui Medical University, Anhui, China. 4 Mary Ann and J. Milburn Smith Child Health Research Program, Department of Pediatrics, Northwestern University Feinberg School...