What age does perimenopause start?
Perimenopause is the transitional stage leading up to menopause, when your ovaries gradually produce less estrogen and progesterone. This shift affects your menstrual cycle, hormone balance, and overall reproductive health. Many women notice changes in their periods, mood, and energy levels during this time.
Typical Age Range for Perimenopause
Average onset: Most women begin perimenopause in their mid-40s, around 45 years old.
Early onset: Some women experience it in their late 30s, especially if there’s a family history of early menopause.
Late onset: Others may not notice perimenopause symptoms until their early 50s.
The duration can also vary: perimenopause often lasts 4–10 years before menopause occurs.
Common Signs of Perimenopause
During perimenopause, hormonal fluctuations can cause noticeable changes, including:
Irregular Periods
Periods may become longer or shorter
Flow can be lighter or heavier than usual
Hot Flashes and Night Sweats
Sudden warmth, flushing, or sweating episodes, especially at night
Mood Changes
Increased irritability, anxiety, or mild depression
Sleep Disturbances
Trouble falling or staying asleep
Changes in Vaginal Health
Dryness, discomfort, or changes in discharge
Other Symptoms
Breast tenderness, fatigue, or decreased libido
When to See a Doctor
Consult a healthcare provider if you experience:
Sudden or severe changes in your period
Intense hot flashes disrupting daily life
Significant mood or sleep disturbances
Any new symptoms that concern you
Early evaluation helps rule out other conditions, like thyroid disorders or hormonal imbalances, and provides strategies to manage symptoms.
Bottom Line
Perimenopause usually begins in your mid-40s, but it can start earlier or later depending on individual factors. Understanding this transition helps you anticipate changes in your period, energy, and overall health — and empowers you to take steps to manage symptoms effectively.
Remember: Perimenopause is a normal stage of life, not a disease. Tracking your cycle and listening to your body is key to staying healthy during this transition.