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What Is the Average Age of Perimenopause Onset? Early Signs

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Published May 1, 2025
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Perimenopause is a major life stage transition where a woman begins transitioning away from her peak reproductive years. While it’s common to hear a lot about menopause, perimenopause is often less discussed. Understanding this important change can make it easier to handle the symptoms that come with it. One common question women ask is what the average age of perimenopause is. In this article, we’ll discuss the average age at which perimenopause starts, how to diagnose it, and what symptoms you can expect.

Key takeaways
  • The average age for perimenopause to start for women is 46.
  • The early perimenopause age range is 40 to 45, while premature ovarian insufficiency is considered when it occurs before the age of 40.
  • Perimenopause is diagnosed through symptoms and hormone tests, depending on the woman’s age.
  • Perimenopausal symptoms include irregular periods, mood changes, hot flashes, night sweats, and brain fog.
  • You can help manage perimenopause symptoms through lifestyle changes, hormone replacement therapy, and mental health treatment.

At what age does perimenopause start?

Perimenopause is a normal part of a woman’s reproductive cycle, where you transition out of your peak reproductive years into menopause. It is caused by ovarian aging, during which the number of follicles decreases dramatically. As a result, levels of sex hormones like estrogen and progesterone drop. This hormonal change affects your menstrual cycle, leading to ovulation being absent and irregular menstrual cycles until they eventually stop completely. 

As women age, they begin to wonder, “When does perimenopause start?” While every woman is different, the average age for perimenopause is 46. 

However, it is possible to begin experiencing symptoms before this time. The early perimenopausal age span is from 40 to 45. A condition called premature ovarian insufficiency can cause the ages of perimenopause to drop into a woman’s 30s, but this condition is extremely rare. Understanding the average perimenopause age can help you better prepare and recognize symptoms when they occur.

How early can perimenopause start?

As we quickly discussed above, while the average age of perimenopause is 46, in some rare cases, it can start as early as their 30s. Premature ovarian insufficiency is when a woman’s ovaries prematurely stop functioning. This condition is extremely rare, affecting only around 1%  of women under age 40. 

The early age for perimenopause is 40 to 45, with only around 5% of women experiencing symptoms during this time. Since premature menopause is caused by dropping estrogen levels, women who begin experiencing menopausal symptoms earlier could be at a higher risk for the negative health effects associated with menopause. 

How is perimenopause usually diagnosed?

While knowing the average age perimenopause starts can help you keep an eye out for when symptoms begin, understanding how it’s diagnosed is another important factor. Diagnosing perimenopause is done in two ways: symptom identification and hormone tests. 

When it comes to diagnosing, perimenopause ages are used to determine which method is used. For women who are 40 to 45, hormone tests are done to determine FSH levels, as well as symptom identification. While women 45+ use their symptoms to determine if they’ve entered perimenopause. 

What signs and symptoms should I expect?

Answering the question, “What age does perimenopause start?” is only one piece of the puzzle. While the common age for perimenopause can help you prepare for its onset, knowing the signs and symptoms is equally important. Here is a list of common symptoms you can expect regardless of your perimenopausal age.

Irregular periods

Around age 46, which is the perimenopause average age onset, the first symptom women experience is irregular period bleeding. Typically, your cycle will become shorter and then get heavier over time. You’ll notice it becomes less predictable than completely unpredictable, going from a variation of around a week to exceeding 60 days in length. Once you’ve gone 12 consecutive months without a period, you officially enter the third stage of perimenopause, menopause

Fatigue

Once you’ve reached the average age for perimenopause, you may start noticing more fatigue. Hormonal fluctuations can make you feel tired and cause sleep disturbances.

Low mood

Regardless of what age perimenopause symptoms start, it’s possible to experience low mood, including depression, stress, and anxiety. Mood swings are also common during this time.

Forgetfulness

Forgetfulness is often associated with aging, and the average perimenopause age is 46. Hormone changes can cause brain fog and make it easier to forget things, which can be a frustrating perimenopausal symptom. 

Hot flashes

As we’ve discussed, the normal age for perimenopause is in the mid-40s, but it’s common to begin experiencing hot flashes closer to its final stage, which occurs in your late 40s to early 50s. Around 75% of perimenopausal and menopausal women experience hot flashes, making it one of the most reported late-stage perimenopausal symptoms. 

Night sweats

Another symptom that’s closer to later age perimenopause and menopause is night sweats. Similar to hot flashes, night sweats are caused by sudden hormone fluctuations and are very common for most women.

Additional symptoms that come with the typical age for perimenopause include:

  • Vaginal dryness
  • Weight gain
  • Low libido or sex drive
  • Pain or discomfort during sex
  • UTIs or bladder infections

What are the common causes of early perimenopause?

Now that we’ve answered, “What is the typical age for perimenopause?” it’s time to talk more about what causes early perimenopause. As you now know, the average age perimenopause starts is 46, and early perimenopause occurs from ages 40 to 45. If you start experiencing symptoms before the typical age for perimenopause, it could be due to the following reasons.

Genetics 

Your genetics can have an impact on the perimenopause average age, causing it to begin early. A family history of early menopausal symptoms and chromosomal abnormalities are the most common culprits.

Smoking

Answering what is the average age for perimenopause may not take into account lifestyle choices. Women who smoke may be at an increased risk of 1-2 years early perimenopause and menopause, so it’s important to take good care of yourself and your body.

Medical conditions

With perimenopause, what age you start experiencing symptoms can also be related to preexisting medical conditions. Certain autoimmune disorders like Graves’ disease can impact ovarian function. Receiving a hysterectomy or oophorectomy can also affect what age perimenopause can start.

Medical treatments

Although knowing what is the average age for perimenopause can give you a good idea of when it will start, if you’re undergoing certain medical treatments, it can cause symptoms to appear sooner. For example, radiation and chemotherapy can cause damage to the ovaries, leading to early perimenopause.

Lifestyle

Some not-so-obvious factors that can impact your age at perimenopause include your place of living. Women in rural areas tend to experience perimenopause earlier than those living in cities. In addition, shift work, alcohol consumption, and diet are also factors that influence the age of onset for perimenopause.

Tips on treating and managing perimenopause

Now that we’ve discussed when perimenopause can start and what symptoms to expect, let’s talk about how to manage and treat them. Although you may not know exactly when perimenopause is going to start, having a plan in place for managing symptoms can give you peace of mind. 

Talk to your doctor about treatment options

Maintaining open communication with your doctor is one of the most important ways you can self-advocate during major life changes. Not only can they give you insight by answering questions like “When does perimenopause start?” but they can also work with you to develop a treatment plan for symptoms. If your symptoms become unmanageable, they can prescribe medications like HRT or antidepressants or recommend supplements. It’s not enough to simply know “When does perimenopause begin?” staying connected with your doctor can make all the difference.

Get enough sleep

Sleep is crucial to maintaining your hormonal health, so ensuring you get 7 to 9 hours each night is essential for managing perimenopausal symptoms.

Manage stress 

Stress has a huge impact on your hormones, so utilizing relaxation techniques like yoga and meditation can help during mood swings and when dealing with anxiety.

Exercise

Exercise is great for your body and mind and can help lessen perimenopause symptoms. 

When to consult a healthcare provider

Now that we’ve covered what age is perimenopause likely to start, what symptoms to expect, and how to manage them, let’s talk about when you should consult your doctor. If your symptoms are severe or interfere with your daily life, you should talk to a healthcare provider. They can work with you to develop a treatment plan that helps you feel better.

So, at what age do you start perimenopause? If you’re around age 46, you may start experiencing perimenopausal symptoms. Having a hormone tracker can help you monitor your hormone levels so you can better prepare for these life changes. Hormona is proud to offer our award-winning hormone tracker that’s revolutionizing how women view their hormonal health. We give you the tools and insights you need to understand your body better so you can feel your best!

FAQ

How common is perimenopause at 25?

Perimenopause at 25 is extremely rare due to a condition called premature ovarian insufficiency and is experienced by only 1% of women. When do you start perimenopause? The normal average age is 46, so it’s important to talk to your doctor if you start having symptoms in your 20s or 30s.

What is the average age women’s periods stop?

While every woman is different, on average, their period will stop between the ages of 51 and 53. It is believed that the number of follicles women are born with can affect when their cycles will end. Women with a higher number of follicles may have longer cycling years, while women with fewer follicles can expect their periods to stop earlier.

What is the oldest age to still have periods?

One of the oldest recorded ages for a woman still having a period was 65. However, most women will stop their periods around the ages of 51 to 53. 

Can stress bring on perimenopause early?

Yes, it is possible for stress to impact early perimenopause since it can accelerate ovarian decline.

Do you age faster in perimenopause?

Yes, perimenopause and menopause can accelerate biological aging in women. 

What is the average age to start perimenopause?

The average age for perimenopause is 46; however, some women can experience early perimenopause between ages 40 and 45.

Disclaimer: This website does not provide medical advice. The information, including but not limited to, text, graphics, images, and other material contained on this website is for informational purposes only. No material on this site is intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition or treatment and before undertaking a new healthcare regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.
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Dr Singh is the Medical Director of the Indiana Sleep Center. His research and clinical practice focuses on the myriad of sleep.

References
  1. Faubion, S. S., Kuhle, C. L., Shuster, L. T., & Rocca, W. A. (2015). Long-term health consequences of premature or early menopause and considerations for management. Climacteric : the journal of the International Menopause Society, 18(4), 483–491. https://doi.org/10.3109/13697137.2015.1020484 
  2. Woods, N. F., & Mitchell, E. S. (2016). The Seattle Midlife Women’s Health Study: a longitudinal prospective study of women during the menopausal transition and early postmenopause. Women’s midlife health, 2, 6. https://doi.org/10.1186/s40695-016-0019-x 
  3. Harlow, S. D., & Paramsothy, P. (2011). Menstruation and the menopausal transition. Obstetrics and gynecology clinics of North America, 38(3), 595–607. https://doi.org/10.1016/j.ogc.2011.05.010
  4. Gold E. B. (2011). The timing of the age at which natural menopause occurs. Obstetrics and gynecology clinics of North America, 38(3), 425–440. https://doi.org/10.1016/j.ogc.2011.05.002 
  5. Swanner, K. D., & Richmond, L. B. (2023). A 65-Year-Old Woman With No Menopause History: A Case Report. Cureus, 15(9), e44792. https://doi.org/10.7759/cureus.44792
  6. Sopiarz N, Sparzak PB. Primary Ovarian Insufficiency. [Updated 2023 Mar 6]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK589674/
  7. Maki, P. M., & Jaff, N. G. (2024). Menopause and brain fog: how to counsel and treat midlife women. Menopause (New York, N.Y.), 31(7), 647–649. https://doi.org/10.1097/GME.0000000000002382
  8. Nakano, K., Pinnow, E., Flaws, J. A., Sorkin, J. D., & Gallicchio, L. (2012). Reproductive history and hot flashes in perimenopausal women. Journal of women’s health (2002), 21(4), 433–439. https://doi.org/10.1089/jwh.2011.2999
  9. Cai, X. F., Wang, B. Y., Zhao, J. M., Nian, M. X., Lin, Q. C., & Huang, J. F. (2024). Association of sleep disturbances with diminished ovarian reserve in women undergoing infertility treatment. Scientific reports, 14(1), 26279. https://doi.org/10.1038/s41598-024-78123-w
  10. Levine, M. E., Lu, A. T., Chen, B. H., Hernandez, D. G., Singleton, A. B., Ferrucci, L., Bandinelli, S., Salfati, E., Manson, J. E., Quach, A., Kusters, C. D., Kuh, D., Wong, A., Teschendorff, A. E., Widschwendter, M., Ritz, B. R., Absher, D., Assimes, T. L., & Horvath, S. (2016). Menopause accelerates biological aging. Proceedings of the National Academy of Sciences of the United States of America, 113(33), 9327–9332. https://doi.org/10.1073/pnas.1604558113 
  11. Menopause, sleepless nights may make women age faster. UCLA Health. https://www.uclahealth.org/news/release/menopause-sleepless-nights-may-make-women-age-faster
  12. McKinlay, S. M., Bifano, N. L., & McKinlay, J. B. (1985). Smoking and age at menopause in women. Annals of internal medicine, 103(3), 350–356. https://doi.org/10.7326/0003-4819-103-3-350
  13. Silver, N. E., MD (2023). Mood Changes During Perimenopause Are Real. Here’s What to Know. ACOG. https://www.acog.org/womens-health/experts-and-stories/the-latest/mood-changes-during-perimenopause-are-real-heres-what-to-know#
References
  1. Faubion, S. S., Kuhle, C. L., Shuster, L. T., & Rocca, W. A. (2015). Long-term health consequences of premature or early menopause and considerations for management. Climacteric : the journal of the International Menopause Society, 18(4), 483–491. https://doi.org/10.3109/13697137.2015.1020484 
  2. Woods, N. F., & Mitchell, E. S. (2016). The Seattle Midlife Women’s Health Study: a longitudinal prospective study of women during the menopausal transition and early postmenopause. Women’s midlife health, 2, 6. https://doi.org/10.1186/s40695-016-0019-x 
  3. Harlow, S. D., & Paramsothy, P. (2011). Menstruation and the menopausal transition. Obstetrics and gynecology clinics of North America, 38(3), 595–607. https://doi.org/10.1016/j.ogc.2011.05.010
  4. Gold E. B. (2011). The timing of the age at which natural menopause occurs. Obstetrics and gynecology clinics of North America, 38(3), 425–440. https://doi.org/10.1016/j.ogc.2011.05.002 
  5. Swanner, K. D., & Richmond, L. B. (2023). A 65-Year-Old Woman With No Menopause History: A Case Report. Cureus, 15(9), e44792. https://doi.org/10.7759/cureus.44792
  6. Sopiarz N, Sparzak PB. Primary Ovarian Insufficiency. [Updated 2023 Mar 6]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK589674/
  7. Maki, P. M., & Jaff, N. G. (2024). Menopause and brain fog: how to counsel and treat midlife women. Menopause (New York, N.Y.), 31(7), 647–649. https://doi.org/10.1097/GME.0000000000002382
  8. Nakano, K., Pinnow, E., Flaws, J. A., Sorkin, J. D., & Gallicchio, L. (2012). Reproductive history and hot flashes in perimenopausal women. Journal of women’s health (2002), 21(4), 433–439. https://doi.org/10.1089/jwh.2011.2999
  9. Cai, X. F., Wang, B. Y., Zhao, J. M., Nian, M. X., Lin, Q. C., & Huang, J. F. (2024). Association of sleep disturbances with diminished ovarian reserve in women undergoing infertility treatment. Scientific reports, 14(1), 26279. https://doi.org/10.1038/s41598-024-78123-w
  10. Levine, M. E., Lu, A. T., Chen, B. H., Hernandez, D. G., Singleton, A. B., Ferrucci, L., Bandinelli, S., Salfati, E., Manson, J. E., Quach, A., Kusters, C. D., Kuh, D., Wong, A., Teschendorff, A. E., Widschwendter, M., Ritz, B. R., Absher, D., Assimes, T. L., & Horvath, S. (2016). Menopause accelerates biological aging. Proceedings of the National Academy of Sciences of the United States of America, 113(33), 9327–9332. https://doi.org/10.1073/pnas.1604558113 
  11. Menopause, sleepless nights may make women age faster. UCLA Health. https://www.uclahealth.org/news/release/menopause-sleepless-nights-may-make-women-age-faster
  12. McKinlay, S. M., Bifano, N. L., & McKinlay, J. B. (1985). Smoking and age at menopause in women. Annals of internal medicine, 103(3), 350–356. https://doi.org/10.7326/0003-4819-103-3-350
  13. Silver, N. E., MD (2023). Mood Changes During Perimenopause Are Real. Here’s What to Know. ACOG. https://www.acog.org/womens-health/experts-and-stories/the-latest/mood-changes-during-perimenopause-are-real-heres-what-to-know#
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