What you need to know

• Hormonal medications are used by women across the life span — primarily for contraception during reproductive years and for symptom relief during the menopausal transition. The right option depends on age, health history, and what you are hoping to achieve.
• Hormonal contraception comes in two broad categories: combined (estrogen plus progestin) and progestin-only. Beyond preventing pregnancy, it is also used for menstrual issues, endometriosis, and conditions like PCOS.
• Menopausal hormone therapy is the most effective treatment for hot flashes, night sweats, and vaginal symptoms of menopause. Current guidance favors starting it earlier rather than later in the menopausal transition, with shared decision-making about benefits and risks.

Hormonal medications are among the most commonly prescribed treatments in women’s health, and they have changed enormously over the past few decades. Doses are lower, formulations are more varied, and the evidence about who benefits and who should consider alternatives is much clearer than it used to be. The two largest areas — contraception in the reproductive years and hormone therapy around menopause — share some chemistry but differ in their goals, the doses involved, and the risk-benefit math.

This article focuses on those two areas. There are other hormonal treatments in women’s health that are not covered in detail here — for example, ovulation induction for fertility, treatment of polycystic ovary syndrome (PCOS), and treatment of certain hormone-sensitive cancers — that warrant their own conversations with a specialist.

Hormonal contraception

According to the American College of Obstetricians and Gynecologists, most women in the US use hormonal contraception at some point in their reproductive years. The methods fall into two main groups based on which hormones are involved.

Combined hormonal contraception

These methods contain both estrogen and a progestin. They are highly effective when used as directed, regulate periods, often reduce menstrual cramping and bleeding, and have several non-contraceptive benefits. Forms include:

• The pill — taken daily.
• The patch — applied weekly.
• The vaginal ring — replaced every 3 to 4 weeks.

Combined methods are generally safe for healthy, non-smoking women, but they are not appropriate for everyone. Combined hormonal contraception is generally not recommended for women with a history of blood clots, certain inherited clotting disorders, uncontrolled high blood pressure, smoking after age 35, certain forms of liver disease, or migraine with aura. The estrogen component is what raises the small but real risk of blood clots, stroke, and heart attack — risks that are higher in people with the conditions above.

Migraine with aura is a particularly important contraindication. If your migraine attacks include neurological symptoms like flashing lights, blind spots, or tingling in the face or arm before the headache starts, combined hormonal methods are usually not appropriate, and a progestin-only option or a non-hormonal method is recommended instead.

Blood pressure also matters. Women with poorly controlled high blood pressure typically need to choose a progestin-only or non-hormonal method.

Progestin-only options

These contain progestin only, with no estrogen. Because they do not affect clotting the way estrogen does, they are options for women in whom combined methods are off the table. Forms include:

• The progestin-only pill (also called the “mini-pill”) — taken daily, with a relatively narrow window for missed doses.
• Hormonal IUDs (levonorgestrel-releasing) — placed in the uterus, last 3 to 8 years depending on the device. Highly effective and reversible.
• The contraceptive implant — a small rod placed under the skin of the upper arm, lasts up to 3 years.
• The contraceptive injection (depot medroxyprogesterone acetate, sold as Depo-Provera) — given every 3 months. Long-term use can affect bone density and is reviewed periodically.

IUDs and implants are sometimes called long-acting reversible contraception (LARC). They are the most effective reversible methods because they remove the day-to-day adherence question — efficacy in real-world use approaches 99%.

Beyond pregnancy prevention

Hormonal contraception is widely used for non-contraceptive reasons. Combined methods reduce dysmenorrhea (menstrual pain) in up to 80% of women, help regulate cycles in conditions like polycystic ovary syndrome, reduce flow in heavy menstrual bleeding, and ease symptoms of endometriosis. The hormonal IUD specifically is highly effective for heavy menstrual bleeding and is often the first choice for that. Long-term use of combined hormonal contraception also reduces the risk of ovarian and endometrial cancer — these protective effects persist for years after stopping.

Menopausal hormone therapy

Menopause is the point at which menstrual periods have stopped for 12 consecutive months — on average around age 51 in the US. The years leading up to it (perimenopause) and the years following often involve hot flashes, night sweats, sleep disruption, mood changes, and vaginal dryness. Some symptoms ease over a few years; others, particularly vaginal and urinary symptoms, tend to persist or worsen without treatment.

Hormone therapy remains the most effective treatment for hot flashes and night sweats (collectively called vasomotor symptoms) and for genitourinary syndrome of menopause (vaginal dryness, painful intercourse, recurrent urinary symptoms). It also prevents bone loss in postmenopausal women.

The FDA has approved menopausal hormone therapy for four indications: moderate-to-severe hot flashes and night sweats, prevention of osteoporosis in postmenopausal women, replacement of estrogen in women who go through early menopause (such as after surgical removal of the ovaries or with primary ovarian insufficiency), and treatment of moderate-to-severe vaginal symptoms. It is not approved or recommended for cardiovascular disease prevention, despite older theories that it might help.

Forms and how they are used

• Estrogen alone — appropriate for women who have had a hysterectomy.
• Estrogen plus a progestogen — for women with a uterus, because unopposed estrogen increases the risk of endometrial cancer. The progestogen component protects the uterine lining.
• Vaginal estrogen — low-dose creams, tablets, or rings that treat vaginal and urinary symptoms with minimal absorption into the rest of the body. Generally considered safe even for some women in whom systemic hormone therapy is not appropriate.

Estradiol can be delivered as oral tablets, transdermal patches, gels, or sprays. Transdermal forms (patch, gel, spray) are increasingly preferred for women with cardiovascular or clotting risk factors because they bypass the liver and seem to carry a lower risk of blood clots than oral preparations.

When it’s appropriate

Current guidance from the Menopause Society emphasizes timing. For women under age 60, or within 10 years of menopause onset, the benefit-risk balance is generally favorable for treatment of bothersome symptoms and for prevention of bone loss. For women starting more than 10 years after menopause, or after age 60, the absolute risks of coronary heart disease, stroke, blood clots, and dementia are higher, and the calculation shifts. None of this means starting later is impossible — but the conversation gets more nuanced and individualized.

Hormone therapy is generally avoided in women with current or recent breast cancer, untreated endometrial cancer, active liver disease, recent or recurrent blood clots, recent stroke, recent heart attack, or unexplained vaginal bleeding that has not been investigated.

Risks in honest terms

Most absolute risks of hormone therapy are small in younger postmenopausal women — typically fewer than 10 additional events per 10,000 women per year for serious outcomes like blood clots and stroke. Combined estrogen-progestogen therapy is associated with a small increase in breast cancer risk that grows with longer use. Estrogen-alone therapy in women without a uterus does not appear to increase breast cancer risk and may slightly reduce it.

These risks are not zero, but they are also not the dramatic numbers many people remember from headlines about the Women’s Health Initiative trial in the early 2000s. Subsequent analysis has clarified that timing of initiation, age, and formulation matter enormously, and current guidelines reflect that.

When to see a doctor

Talk to a clinician about contraception when starting, switching, or stopping a method, when you experience side effects, or when your health changes (new high blood pressure, new migraines with aura, new clotting concerns, or major weight changes). Get prompt evaluation for unusual symptoms while on combined hormonal contraception — sudden severe headache, calf swelling or pain, chest pain, shortness of breath, or visual changes can signal a blood clot or stroke and warrant emergency care.

For perimenopause and menopause symptoms, do not wait until they are severe. Effective options exist for hot flashes, sleep disruption, mood changes, and vaginal symptoms, and the right time to start treatment is generally earlier than later in the transition. Bring up any new bleeding after menopause has been established — it is usually benign but always warrants evaluation.

Frequently asked questions