Reproductive Health

For the first time, scientists have identified genetic variants that increase the risk of aneuploidy, in which cells have an abnormal number of chromosomes. Aneuploidy in egg cells can lead to miscarriage.

A figure commonly used to compare the risk of death from pregnancy compared with the risk of death from abortion might be based on outdated data, a new study suggests.

A California woman was scheduled to have a large cyst removed but, in the lead-up to the procedure, learned she had a rare ectopic pregnancy.

Scientists invented a new experimental system to study how age-related changes in egg cells make them more prone to chromosomal errors.

A new study hints that pregnant people who have previously taken drugs like Ozempic may face a higher risk of certain poor pregnancy outcomes. But more studies are needed to understand the finding.

Scientists are learning more about this leading complication of childbirth. Treatments are improving and doctors can test for biological markers that flag heightened risk.

The American College of Obstetricians and Gynecologists recommends that mothers abstain from cannabis use during prepregnancy, pregnancy and lactation, as research shows the drug is linked to serious health outcomes in newborns.

In a proof-of-concept experiment, scientists demonstrated that you can create and fertilize human eggs in the lab using sperm, genes from skin cells, and the "shells" of existing egg cells.

A study of human placentas suggests that urban air pollution may push the organ's resident immune cells into an inflammatory state.