Posteri
The JournalPerimenopause

The year before you notice anything

Perimenopause rarely announces itself. It usually starts as a run of small, unrelated-looking changes — and most women date the beginning about two years later than it actually began.

Posteri Editorial 8 min read

Sample article, written for product preview. Not yet published editorial.

Expert reviewed by Dr Amara Blake, MBBS, MRCGP, BMS Advanced Certificate · July 2026

Most women can name the month their periods changed. Very few can name the month perimenopause started — because the first year is usually made of things that look like something else entirely.

What tends to shift first

  • Sleep quality, before sleep quantity
  • Tolerance for noise, interruption and nonsense
  • Recovery time after exercise or a late night
  • Cycle length moving by a few days in either direction
  • A low-grade sense of being slightly out of step with yourself

None of these are dramatic on their own. Together, over a year, they are the pattern — and the pattern is the useful thing to bring to a clinician.

Why it gets missed

Hormone levels in early perimenopause fluctuate rather than fall in a straight line, so a single blood test on a single day frequently reads as unremarkable. Assessment in this stage is largely clinical: your symptoms, your age and your cycle history, taken together.

"The most useful thing a woman can bring me is two or three months of notes. Not a diagnosis — a pattern."

What to do with this

Start writing things down, dated, for two cycles. You are not building a case. You are building the timeline that makes a ten-minute appointment actually work.

Sources

  • Menopause: diagnosis and management (NG23) — NICE
  • Stages of Reproductive Aging Workshop +10 — STRAW+10

Posteri Journal content is educational. It does not diagnose, prescribe or replace personalised clinical care.

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