Menopause is often spoken about as a moment in time, but in reality, it’s a complex and gradual process that marks the natural end of a woman's reproductive years.
Understanding menopause means understanding not only the shift in hormone production but also the many transitions your body goes through along the way. For many women, it can feel like a confusing time—so let's break it down.
What is menopause?
Menopause signifies the permanent transition from a reproductive to a non-reproductive phase of life. Medically, it’s defined by 12 consecutive months without a menstrual period that isn’t due to other causes. This shift is a natural biological process and not a disease or disorder, though it can come with challenging symptoms.
What happens in the body before menopause?
Before menopause, your body goes through a series of reproductive phases:
Reproductive Phase:
Early Reproductive: Menstrual cycles may be irregular.
Peak Reproductive: Menstrual cycles are regular and consistent.
Late Reproductive: Subtle changes in cycle length or flow may begin.
Menopause Transition (Perimenopause):
Early Transition: Menstrual cycles vary more than 7 days between consecutive periods.
Late Transition: Gaps of 60 days or more between periods begin.
During this transition, symptoms associated with menopause (like hot flushes or mood swings) may begin and even continue for several years.
When does menopause start?
Menopause doesn’t begin overnight. Most women start to experience subtle shifts during their 40s, but the exact timing can vary greatly. The average age of menopause—the final menstrual period—is around 50 years old, but the transition, known as perimenopause, can begin much earlier, sometimes in your late 30s or early 40s.
During perimenopause, your ovaries begin to slow their hormone production—especially oestrogen—and this can cause noticeable changes in your menstrual cycle and overall health. This transition phase can last anywhere from 2 to 10 years, and symptoms can vary from barely perceptible to significantly disruptive.
As your body approaches menopause, you may start to feel or observe:
– Irregular menstrual cycles – shorter or longer cycles, heavier or lighter bleeding.
– Hot flushes – sudden waves of heat that can spread through the face and chest.
– Night sweats – intense sweating that may interrupt sleep./
– Mood fluctuations – increased anxiety, low mood, or irritability.
– Trouble sleeping – difficulty falling asleep or frequent waking during the night.
– Brain fog – forgetfulness, reduced concentration, or slower thinking.
– Fatigue – a deeper level of tiredness that doesn’t improve with rest.
– Breast tenderness – changes in breast sensitivity or fullness.
– Changes in libido – lower sexual desire or changes in sexual response.
– Vaginal dryness or discomfort – a result of reduced oestrogen levels.
– Urinary urgency or leakage – changes in bladder sensitivity or pelvic floor control.
These signs may start gradually and fluctuate over time. If you’re unsure whether what you’re experiencing is part of perimenopause, it’s a good idea to speak with a health professional who can guide you through testing or symptom management.
When does menopause end?
Menopause itself is defined as a single point in time—12 months after your final menstrual period. Once this milestone has passed, you are considered to be in the postmenopausal phase. While menopause “ends” at that 12-month mark, the effects of shifting hormones continue. In the years following, many symptoms begin to ease as your body stabilises into its new hormonal normal.
The postmenopausal phase has two parts:
Early Postmenopause: This begins from the point of your last period and typically lasts 5–8 years. During this time, symptoms like hot flushes and mood changes may still be present, but often start to decrease in intensity.
Late Postmenopause: This phase extends through the rest of your life. Hormone levels remain low and stable, and the focus often turns toward long-term health maintenance—such as bone density, cardiovascular health, and genitourinary changes.
So, while menopause as a transitional process ends, its health implications continue to evolve.
What factors are associated with early menopause?
While most women reach menopause around age 50, some experience it earlier due to a range of biological and environmental factors. Menopause that occurs between ages 40–45 is considered early menopause, and before age 40 is called premature menopause.
Several factors can influence the timing:
Genetics: Family history plays a significant role. If your mother experienced early menopause, you may as well.
Shorter menstrual cycles: Women with cycles shorter than 26 days may reach menopause sooner due to faster depletion of their egg reserve.
Early menstruation: Beginning menstruation before age 12 may be linked to earlier menopause, as more ovulatory cycles occur across a lifetime.
Smoking: Tobacco use is one of the strongest modifiable risk factors. It has anti-oestrogen effects and can accelerate ovarian ageing.
Medical or surgical factors: Treatments such as chemotherapy or radiation, or surgeries like oophorectomy (removal of the ovaries), can trigger early or sudden menopause.
Knowing these factors can help women monitor changes earlier and consider supportive interventions if needed.
Is menopause permanent?
Yes, menopause is a permanent biological shift. Once you have reached menopause—defined by 12 consecutive months without a period—you will not return to a premenopausal hormonal state. This is because the ovaries significantly reduce their production of oestrogen and progesterone, and ovulation ceases entirely.
While hormonal fluctuations may continue for a few years after menopause, they do eventually stabilise at lower levels. This doesn’t mean the effects of menopause disappear; many women continue to experience symptoms like vaginal dryness, joint discomfort, or changes in mood and memory into later life. However, many of these can be effectively managed – and as pelvic physiotherapsists, we can help you with this!
Understanding that menopause is a lasting change can empower you to take proactive steps in maintaining your wellbeing during this next life stage.
Other Blogs in the Menopause Series
Deep dive into education written by our pelvic physiotherapist, Shauna, all about the menopause – including symptoms, treatment & understanding the range of associated conditions.
