Hormone Replacement Therapy for Menopause: Benefits, Risks, and Types

Hormone replacement therapy (HRT) treats menopause symptoms like hot flashes, night sweats, and vaginal dryness by replacing estrogen, and adding a progestogen if you still have a uterus. Evidence supports starting HRT within 10 years of menopause or before age 60 for many healthy patients, when benefits often outweigh risks 1. A licensed clinician should tailor the type, dose, and form to your history.

What is hormone replacement therapy?

Hormone replacement therapy means giving estrogen, and sometimes a progestogen, to replace hormones that fall during menopause. It is commonly used for vasomotor symptoms, such as hot flashes and night sweats, and for genitourinary syndrome of menopause, which includes vaginal dryness, burning, urinary symptoms, and painful sex 1.

Why estrogen and progesterone drop at menopause

Menopause is the point when menstrual periods have stopped for 12 months because the ovaries are no longer releasing eggs in a regular cycle. Perimenopause is the transition before that point, when estrogen can swing up and down. Postmenopause is the time after menopause 2.

The main estrogen used in many modern HRT plans is estradiol. Other estrogens include estrone and estriol. Some older hormone products use conjugated equine estrogens, or CEEs, which are a mixture of estrogens studied in the Women’s Health Initiative, or WHI 3.

HRT vs. menopausal hormone therapy: same thing?

Yes. Many clinicians now prefer the term menopausal hormone therapy (MHT) because the goal is not to make hormone levels “young” again. In everyday patient language, HRT and MHT usually mean the same thing: estrogen therapy, with progestogen added when needed 1.

What symptoms does HRT treat?

HRT is the most effective FDA-approved treatment class for bothersome hot flashes and night sweats, and it can also help vaginal and urinary symptoms depending on the form used 1. Benefits should always be weighed against risks such as breast tenderness, bleeding, blood clots, stroke, and cancer risks that vary by regimen 2.

Hot flashes and night sweats

Hot flashes and night sweats are called vasomotor symptoms. They happen when falling estrogen changes the brain’s temperature control system. The North American Menopause Society states that hormone therapy remains the most effective treatment for vasomotor symptoms in appropriate patients 1.

Vaginal dryness and painful sex

Genitourinary syndrome of menopause, or GSM, can include vaginal dryness, burning, irritation, painful sex, urinary urgency, and repeated urinary symptoms. Low-dose vaginal estrogen, vaginal DHEA, and some non-estrogen options are used for GSM, while systemic estrogen may help if whole-body symptoms are also present 1.

Sleep, mood, and bone loss

When hot flashes wake you up, HRT may improve sleep by reducing those symptoms. It is also approved for prevention of postmenopausal osteoporosis in selected patients, but osteoporosis treatment choices depend on fracture risk, age, and other medicines 1. Mood symptoms can improve for some people when sleep and hot flashes improve, but HRT is not a stand-alone treatment for major depression.

What are the types of hormone replacement therapy?

The biggest HRT split is estrogen therapy versus estrogen-progestogen therapy. If you have a uterus, progestogen is usually added because estrogen alone can thicken the uterine lining and raise endometrial cancer risk 2.

Estrogen-only therapy

Estrogen therapy, or ET, uses estrogen without a progestogen. It is generally used for people who have had a hysterectomy, because they do not have a uterine lining to protect 2. In the WHI estrogen-alone trial, women with prior hysterectomy received conjugated equine estrogen 0.625 mg daily; the trial was stopped after an average 6.8 years because of higher stroke risk and no heart-disease benefit 4.

Combined estrogen + progestogen therapy

Estrogen-progestogen therapy, or EPT, combines estrogen with progesterone or a progestin. Micronized progesterone is a form of progesterone that is chemically identical to the hormone made by the body. Progestins are synthetic progestogens, such as medroxyprogesterone acetate, norethindrone, and levonorgestrel 2.

In the WHI combined-therapy trial, postmenopausal women with a uterus received conjugated equine estrogen 0.625 mg plus medroxyprogesterone acetate 2.5 mg daily; the trial was stopped after an average 5.2 years because the overall risk-benefit balance became unfavorable, including higher risks of breast cancer, coronary heart disease, stroke, and pulmonary embolism, alongside lower fracture and colorectal cancer rates 3. Individual risks vary.

Systemic vs. local vaginal therapy

Systemic HRT reaches the bloodstream and can affect the whole body. Pills, patches, gels, sprays, and some rings can be systemic. Local vaginal estrogen is placed in the vagina at low doses and is mainly used for GSM; it has less whole-body absorption than systemic therapy 1.

Continuous vs. cyclic dosing

Some combined regimens use estrogen and progestogen every day. Others use estrogen daily with progestogen for part of the month. The choice affects bleeding patterns and side effects, so it should be individualized by a clinician rather than copied from someone else’s plan 2.

What forms does HRT come in?

HRT forms include pills, patches, gels, sprays, vaginal rings, creams, vaginal tablets, and sometimes a progestogen IUD. The best form depends on the symptom target, personal risk factors, comfort with the route, cost, and whether you need uterine protection 1.

For people seeking a fully online evaluation, Chia’s HRT for Women protocol includes oral estradiol plus progesterone IR when a licensed provider determines it is appropriate. A prescription is not automatic; the review checks safety first.

At what age is HRT most effective?

HRT tends to have the most favorable benefit-risk profile when started before age 60 or within 10 years of menopause for healthy patients with bothersome symptoms 1. This is often called the timing hypothesis or window of opportunity.

The 10-year window of opportunity

NAMS states that for women younger than 60 years or within 10 years of menopause onset who have no contraindications, the benefit-risk ratio is favorable for treatment of vasomotor symptoms and prevention of bone loss 1. For women who start more than 10 years from menopause onset or after age 60, the benefit-risk ratio appears less favorable because absolute risks of coronary heart disease, stroke, venous thromboembolism, and dementia rise with age 1.

Perimenopause vs. postmenopause

Perimenopause can be tricky because periods may still occur and pregnancy may still be possible. Postmenopause plans depend more on symptom burden, time since the final period, and long-term risks. In both stages, the key question is not just age; it is whether the expected benefits are worth the risks for that person 2.

What are the risks and side effects of HRT?

HRT risks depend on the hormone type, route, dose, duration, and your health history. The main serious risks clinicians screen for are breast cancer, blood clots such as DVT or pulmonary embolism, stroke, heart disease, gallbladder disease, and endometrial cancer when estrogen is used without enough progestogen in a person with a uterus 1.

Breast cancer risk in context

In the WHI combined estrogen plus medroxyprogesterone acetate trial, invasive breast cancer risk was higher in the combined-therapy group than in the placebo group 3. In the WHI estrogen-alone trial in women with hysterectomy, the breast cancer findings differed from the combined-therapy trial, showing why uterus status and regimen matter 4.

Breast cancer risk is also shaped by age, family history, alcohol use, body weight, breast density, and prior biopsies. That is why HRT decisions should include routine breast screening and a clear discussion of symptom benefit versus risk 2.

Blood clots and stroke

Oral estrogen can increase the risk of venous thromboembolism, which includes deep vein thrombosis and pulmonary embolism. ACOG notes that estrogen therapy is associated with an increased clot risk, and that risk is higher in people with risk factors such as obesity, immobilization, and fracture 6.

Transdermal estrogen may have less effect on clotting markers than oral estrogen, but route choice is still a medical decision. People with a personal history of blood clots, stroke, or certain clotting disorders need careful review before any systemic hormone therapy is considered 6.

Endometrial cancer and why progestogen matters

If you have a uterus, estrogen without enough progestogen can make the uterine lining grow. That raises the risk of endometrial, or uterine, cancer. Adding progesterone or a progestin lowers that risk by opposing estrogen’s effect on the lining 2.

Common side effects

Common HRT side effects can include breast tenderness, bloating, nausea, headache, mood changes, spotting or bleeding, skin irritation from patches, or vaginal discharge with local products 2. New bleeding after menopause should always be evaluated, even if someone is using HRT.

Who should not take HRT?

Some people should avoid systemic HRT or need specialist input before considering it. ACOG lists conditions where systemic hormone therapy is usually not recommended, including breast or endometrial cancer, stroke, heart attack, blood clots, and liver disease 2.

• Current, past, or suspected breast cancer or estrogen-sensitive cancer
• Unexplained vaginal bleeding
• History of endometrial cancer unless cleared by an oncology or gynecology specialist
• Prior stroke, heart attack, pulmonary embolism, or deep vein thrombosis
• Known high-risk clotting disorder
• Active liver disease
• Pregnancy or possible pregnancy
• Allergy or serious reaction to a hormone product ingredient

This list is not complete. A licensed clinician should review your personal history, family history, blood pressure, cancer screening status, medicines, and symptom goals before prescribing 2.

What about bioidentical and compounded hormone therapy?

Bioidentical hormones are hormones with the same chemical structure as hormones made by the body. Some are FDA-approved, including certain estradiol and micronized progesterone products. Others are compounded by a 503A pharmacy for a specific patient prescription 7.

FDA-approved bioidenticals

The word bioidentical does not automatically mean compounded. FDA-approved estradiol and progesterone products exist in several forms, and those products have FDA-reviewed labeling, manufacturing standards, and safety information 7.

Compounded hormones: what patients should know

Compounded hormone therapy is made for an individual patient by a licensed compounding pharmacy after a clinician writes a prescription. ACOG states that compounded bioidentical menopausal hormone therapy should not be prescribed routinely when FDA-approved formulations are available, because evidence supporting claims of safety and effectiveness is limited 7.

At Chia, when we prescribe through the HRT for Women protocol, our providers use an online medical review and state-licensed 503A pharmacy dispensing. The safety axis we care about is licensed care: a real medical evaluation, clear follow-up, and pharmacy standards, not no-prescription hormone products sold outside the medical system.

Does HRT cause weight gain?

HRT is not usually considered a direct cause of menopause weight gain. Weight often changes during midlife because of aging, sleep disruption, lower activity, changes in muscle mass, and menopause-related body-fat redistribution 1.

Some people notice bloating, breast fullness, or fluid shifts after starting hormones, which can feel like weight gain. Others sleep better when hot flashes improve, which may make healthy routines easier. HRT should not be used as a weight-loss medicine; it is used for menopause symptoms and selected bone-health indications 1.

How does HRT for women at Chia work online?

Chia’s HRT for Women protocol is a 100% online path for evaluation, not an automatic prescription. The protocol includes oral estradiol plus progesterone IR when a licensed US provider decides it is clinically appropriate after reviewing your health questionnaire.

What the Chia HRT for Women protocol includes

The HRT for Women protocol includes Estradiol Oral + Progesterone IR. Progesterone is included because estrogen without adequate progestogen can raise uterine lining risk in people with a uterus 2. Your provider reviews whether this protocol fits your history and symptoms.

How the online visit and prescription process works

1. 1You start with Chia’s online eligibility quiz and health questionnaire.
2. 2A licensed US provider reviews your symptoms, health history, medicines, and risk factors.
3. 3If HRT is appropriate, the prescription is sent to a state-licensed US 503A compounding pharmacy.
4. 4Medication ships to your door, and you can message your care team through the patient portal between visits.
5. 5Dosing is provider-guided and adjusted over time when needed; a prescription is never guaranteed.

If your history suggests HRT may not be a good fit, our providers can help you understand why and what to discuss next. For example, some patients need in-person evaluation for bleeding, breast symptoms, high-risk clot history, or complex cancer history before hormone decisions are made.

Chia also offers estradiol and progesterone treatment pages where you can read more about available hormone categories in our catalog. Plans for the HRT for Women protocol currently start at $119/month; the protocol page has current details.

How should you prepare for an HRT visit?

A good HRT visit starts with your symptom pattern, not just a lab number. Most menopause care is based on symptoms, menstrual history, age, uterus status, and risk factors; routine hormone testing is not always needed for typical menopause 2.

• Write down your main symptoms, how often they happen, and how much they affect sleep, sex, work, and mood.
• Know the date of your last period, or whether you have had a hysterectomy.
• List your current medicines and supplements.
• Share any history of breast cancer, uterine cancer, blood clots, stroke, heart attack, migraine with aura, liver disease, or unexplained bleeding.
• Gather family history of breast cancer, ovarian cancer, uterine cancer, early heart disease, or clotting disorders.
• Make sure routine screening, such as mammograms and cervical cancer screening when indicated, is up to date.

You can begin that review through Chia’s online eligibility quiz. The goal is not to fit everyone into the same plan; it is to decide whether HRT is appropriate and, if so, which approach is safest.

Frequently asked questions about HRT for menopause

Keep reading

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Bioidentical Hormone Replacement Therapy: What It Is, Risks, and How It Works

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HRT Side Effects: What to Expect and When to Call Your Provider

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