What is perimenopause?
Perimenopause is the transitional period leading up to menopause. It typically begins in your mid-40s (but can start as early as your late 30s) and lasts an average of 4-8 years. During this time, your ovaries gradually produce less estrogen. Periods become irregular — sometimes heavier, sometimes lighter, sometimes skipped. Hormone levels fluctuate unpredictably, which is why symptoms can feel erratic.
Key facts at a glance
- Perimenopause typically starts in your 40s and lasts 4-8 years
- Menopause is confirmed after 12 months without a period
- Average age of menopause is 51
- Symptoms can start years before your last period
What is menopause?
Menopause is a specific point in time — it is confirmed when you have gone 12 consecutive months without a menstrual period. The average age of natural menopause is 51, but it can occur anywhere from 40 to 58. After this point, you are considered postmenopausal. Hormone levels stabilize at a lower baseline, and symptoms may gradually improve — though some women experience symptoms for years afterward.
Key differences
During perimenopause: periods are still occurring (though irregular), hormone levels fluctuate widely, symptoms can be unpredictable, and pregnancy is still possible. After menopause: periods have stopped permanently, hormone levels are consistently low, symptoms may stabilize or gradually improve, and pregnancy is no longer possible naturally.
Working with your doctor
There is no single test that definitively diagnoses perimenopause — it is primarily a clinical diagnosis based on your symptoms and menstrual history. FSH levels can be suggestive but fluctuate significantly during perimenopause. Your symptom tracking data from Menoa provides valuable longitudinal context that a single blood test cannot.
How Menoa helps
Menoa asks about your menopause stage during onboarding and tailors tracking recommendations accordingly. Your MRS score provides a baseline regardless of stage, and the AI companion contextualizes your symptoms within your stage of the menopause transition.
Download Menoa