Medically reviewed by Alex Yampolsky, PharmDMedically reviewed by Alex Yampolsky, PharmD Progesterone is a female sex hormone that plays an essential role in the menstrual cycle and pregnancy. Low ...

If you're approaching menopause or already in the thick of it, you've probably heard plenty about declining estrogen levels.

Progesterone helps regulate the menstrual cycle and supports a healthy pregnancy. Progesterone levels can be measured with a blood test to track ovulation or diagnose fertility issues. Synthetic ...

As menstrual periods approach and progesterone levels fall, immune activity may again increase and cause flare-ups of ...

Did you know your body is full of chemical messengers that help regulate your various organs and body systems? There are at least 50 such chemicals, called hormones, in the human body. Their levels ...

If untreated, low progesterone may affect fertility and immunity in the long run. It may also raise the risk of a condition called endometrial hyperplasia, where the uterus’s endometrium becomes too ...

Human milk (HM) contains a wide range of biologically active components that include estrogens and progesterone. Although maternal estrogens and progesterone levels drop rapidly after birth, they ...

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, ...

Progesterone is part of hormone replacement therapy (HRT) for people who have been through menopause and still have a uterus. Possible side effects include spotting, headaches, and breast tenderness.