Estrogen and progesterone are complementary reproductive hormones. Estrogen shapes everything from puberty to menstrual cycles to bone health, and progesterone is key to the second half of the ...

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 ...

If you’ve recently started on birth control or menopausal hormone therapy and feel like you’ve gained a little weight, you’re certainly not alone. We often associate both of these regimens with weight ...

Women who take progesterone in the year before becoming pregnant may reduce their risk for miscarriage by as much as 18%, according to a new study analyzing tens of thousands of pregnancies nationwide ...

The addition of the hormone progesterone to gender-affirming hormone therapy leads to increased breast growth for transgender people following feminizing hormone therapy. This is demonstrated by an ...

The addition of the hormone progesterone to gender-affirming hormone therapy leads to increased breast growth for transgender people following feminizing hormone therapy. This is demonstrated by an ...

Women using a certain type of hormone therapy to treat menopause symptoms could be at higher risk for breast cancer, according to a new study. The study, published Tuesday in The Lancet Oncology, ...

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 ...

Female hormones can suppress pain by making immune cells near the spinal cord produce opioids, a new study from researchers at UC San Francisco has found. This stops pain signals before they get to ...

Progesterone Receptor Positive (PR+) breast cancer is a distinct biological subtype of hormone receptor positive breast cancer. This type of cancer grows in response to progesterone, a hormone that is ...

The Hormometer is an at-home test that lets you measure cortisol and progesterone levels. The Hormometer is an at-home test that lets you measure cortisol and progesterone levels. is a senior reporter ...