Perimenopause can begin years before your period changes
Fatigue, brain fog, weight that won’t move, sleep that fell apart — and a doctor who says your labs are normal. Here’s why standard testing misses early perimenopause, and what “optimal, not normal” means for your hormones.
Illustrative: hormone levels swing through the reproductive years, grow erratic through perimenopause, then settle low in menopause — a single blood test catches only one point on a moving curve.
Perimenopause can begin in your early forties — years before your cycle changes — while your hormones swing enough that a single blood test still reads “normal.” Here’s what actually shifts, why standard testing misses it, and how we read the transition instead of waiting for its finish line.
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