- Average age of menopause
- About 51
- Definition of menopause
- 12 months in a row without a period
- Typical perimenopause length
- About 5 years, varying widely
- Hot flash duration (SWAN)
- Median 7.4 years for frequent symptoms
Perimenopause, menopause and postmenopause
Perimenopause, also called the menopausal transition, is the stretch when ovarian hormones start to fluctuate. It usually begins in your 40s and lasts around five years on average, though for some people it is much shorter or longer.
Menopause itself is a single point in time: 12 consecutive months without a period, which in the U.S. happens at about age 51 on average. Everything after that is postmenopause. Because the milestone is only clear in hindsight, many people spend years unsure whether their symptoms are hormonal.
How long symptoms usually last
In the SWAN study, frequent hot flashes and night sweats lasted a median of 7.4 years in total and continued for about 4.5 years after the final period. People whose symptoms started early in the transition tended to have them longest. Genitourinary symptoms behave differently and often continue without treatment.
What the transition can feel like
Hot flashes and night sweats are the best-known symptoms, and about two in three people get them at some point. But the list is longer, and some of the most disruptive changes are the least discussed.
- Cycle changes: shorter, longer, heavier, lighter or skipped periods
- Broken sleep, often from night sweats or early waking
- Mood changes, irritability, anxiety or low mood
- Trouble focusing and word-finding lapses
- Vaginal dryness, pain with sex and more frequent urinary symptoms
- Lower interest in sex
- Joint aches, palpitations and changes in body fat distribution
Why a single hormone test can mislead
During perimenopause, estrogen and FSH can swing from high to low within weeks. A blood test taken on one day may look completely normal even when you have classic symptoms. The American Society for Reproductive Medicine notes there is no single blood test that can predict or diagnose the transition.
Instead, perimenopause is usually a clinical diagnosis based on your age, cycle pattern and symptoms. Labs are still useful, but mainly to rule out other causes and set a baseline before treatment.
Other causes worth checking
Several common conditions overlap with perimenopause symptoms and are easy to miss if everything is blamed on hormones:
- Thyroid disease, which affects energy, weight, mood, heat tolerance and periods
- Iron deficiency, especially with heavy or prolonged bleeding
- Rising blood sugar or insulin resistance
- Sleep apnea, which becomes more common after the transition
- Depression or anxiety disorders
- Medication side effects and alcohol
Treatment options
Hormone therapy is the most effective treatment for hot flashes and night sweats and also treats genitourinary symptoms. The Menopause Society's 2022 position statement says that for healthy people under 60 or within 10 years of menopause onset, the benefits generally outweigh the risks, while risks rise with age and time since menopause.
Risks, including blood clots, stroke and breast cancer, depend on the type, dose and route of hormone and on your own history, so the decision should be individualized. If you have a uterus, estrogen is paired with a progestogen such as progesterone to protect the uterine lining. Non-hormonal prescriptions and vaginal moisturizers are options for those who can't or don't want to use systemic hormones.
At HealifyMD, the hormone therapy plan for women is $349 for the first month, then $99/month, with prices confirmed at your eligibility review. The first month includes the evaluation and baseline labs.
Preparing for your visit
A few weeks of symptom notes make appointments far more productive. Record cycle dates and flow, hot flashes and night sweats, sleep, mood and any pain with sex. Bring a full list of medications and supplements, and your family history of breast cancer, blood clots, stroke and heart disease, since these shape which treatments are safest for you.
When to see a doctor in person
Any bleeding or spotting after you have gone a full year without a period needs prompt evaluation. So do very heavy bleeding that soaks through protection hourly, bleeding between periods that keeps happening, a new breast lump, or chest pain and palpitations with fainting or shortness of breath.
