The placenta has long been thought to produce serotonin during pregnancy. But in a new study, Yale researchers shatter the deep-rooted hypothesis — and show that the placenta doesn’t produce serotonin ...

The placenta is a pancake-shaped organ that develops within the wall of your uterus and connects to your baby though the umbilical cord. By the end of pregnancy, it grows to be about 9 inches in ...

Your stress may be at an all-time high when you hear that you have a low-lying placenta. In the sea of problems related to pregnancy, this term can once again leave you wondering about its meaning.

The placenta grows and changes shape throughout your pregnancy. Any vaginal bleeding, abdominal pain, or back pain may indicate a more serious issue that your doctor needs to address. Share on ...

A patchwork of genomic differences in the placenta may explain the organ’s “live fast, die young” strategy and its connections to cancer. In 2008, while the medical resident Sam Behjati was doing his ...