Perimenopause: the years no one warned you about

Perimenopause is the 4 to 10 years of hormonal volatility before your period stops for good. It usually starts in the early-to-mid 40s, sometimes earlier. The defining feature is unpredictability: cycles get shorter then longer, periods get heavier then lighter, sleep gets weird, mood swings appear, hot flashes might start. Most clinicians under-recognize it.

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Signs that you are in it

Cycle length changing by 7+ days. Periods heavier or much lighter than your norm. Worsening PMS / new onset PMS. Sleep falling apart, especially in the second half of the cycle. Hot flashes or night sweats. Mood swings, anxiety, low mood (especially if new). Vaginal dryness. Lower libido. Brain fog. Heavier days that come closer together.

What helps

Hormone replacement therapy (estrogen + progesterone if you have a uterus) is the most effective treatment for hot flashes, night sweats, sleep issues, and mood symptoms. Talk to a clinician who knows the current evidence (not 2002 WHI fears). Vaginal estrogen for genitourinary symptoms is local-only and safe for almost everyone.

Lifestyle that actually helps

Resistance training (2 to 3 times per week) preserves muscle and bone. Adequate protein (1 g per kg body weight). Sleep priority. Less alcohol (your liver tolerates less in perimenopause). Magnesium glycinate for sleep. SSRIs for mood symptoms if HRT is not an option.

When to see a clinician quickly

Periods getting much heavier (soaking pads), bleeding after sex, bleeding between periods, periods returning after a 12-month gap, any postmenopausal bleeding. These need a workup, not just attribution to "perimenopause."

Common questions

When does perimenopause start? +

Usually mid-40s but ranges from late 30s to early 50s. Lasts 4 to 10 years before periods stop.

Is hormone replacement safe? +

For most healthy women under 60 or within 10 years of menopause, current evidence strongly supports the benefit-risk balance for symptomatic perimenopause/menopause. The 2002 WHI scare has been substantially walked back. Find a clinician current on the data.

Can you still get pregnant in perimenopause? +

Yes, until your period has been absent for 12 months. Use contraception until then if pregnancy is not the goal.