The adverse effects of hormonal therapy

Area of Science:

• Reproductive endocrinology and hormone therapy research.

Background:

• Estrogen therapy is commonly used for menopausal symptom relief and bone loss prevention.
• The use of progestin alongside estrogen is crucial for women with a uterus to prevent endometrial hyperplasia and uterine cancer.

Purpose of the Study:

• To evaluate the cardiovascular effects of estrogen-progestin therapy versus unopposed estrogen therapy in postmenopausal women.
• To clarify the benefits and risks of different menopausal hormone therapy regimens concerning cardiovascular health, bone metabolism, and menopausal symptoms.

Main Methods:

• This study reviews existing literature and clinical guidelines on menopausal hormone therapy.
• Analysis of the impact of progestins on estrogen's effects on lipoprotein profiles and cardiovascular markers.
• Assessment of benefits for menopausal symptoms and bone density in women with and without a uterus.

Main Results:

• In women with intact uteri, progestins negate or overwhelm the beneficial cardiovascular effects of estrogen on lipoprotein profiles.
• Estrogen-progestin therapy provides significant benefits for menopausal symptoms and bone loss in women with a uterus.
• Unopposed estrogen therapy in women without a uterus may offer cardiovascular protection, alongside benefits for bone metabolism and menopausal symptoms.

Conclusions:

• Estrogen-progestin therapy is beneficial for menopausal symptoms and bone health in women with a uterus, with no expected cardiovascular advantage.
• Unopposed estrogen therapy presents a favorable risk-benefit profile for cardiovascular health, bone metabolism, and menopausal symptoms in women who have undergone hysterectomy.