This article was reviewed by Julia Switzer, MD, FACOG. If you’re entering perimenopause or menopause, you’ve probably heard about hormone replacement therapy (HRT) — and you might be wondering about ...

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 ...

This article was reviewed by Julia Switzer, MD, FACOG. Key Takeaways: Estrogen and progesterone are complementary reproductive hormones. Estrogen shapes everything from puberty to menstrual cycles to ...