In 2002, one out every eight babies was born prematurely. Doctors say many complications can occur when a baby arrives too early. Hormone injections may help women carry their babies to full term.

Progesterone is a hormone that your body produces after ovulation. It prepares the lining of the uterus for pregnancy. Progesterone levels rise and fall every menstrual cycle. If you don't get ...

While you read this article, your body is busy at work: Chemicals are being secreted from glands, organs, and tissues, sending messages that direct your body to react in certain ways. These chemicals, ...

The female body runs on a well-balanced combination of hormones. Estrogen regulates the menstrual cycle and ovulation. Meanwhile, progesterone prepares the body for a potential pregnancy by thickening ...