Cover of „The Invisible Decade“ by Mona Poulev

A book by Mona Poulev

The Invisible Decade

Understand your hormones, reclaim your energy, and feel like yourself again.

You are not too young. You are right in the middle of it.

Deutsche Ausgabe: Das unsichtbare Jahrzehnt

You are not imagining it.

You sleep worse, your weight shifts, words vanish mid-sentence. You are told it is stress or your age. For many women, one explanation is perimenopause, and it begins years before anyone mentions the word ‘menopause’.

Inside this book

  1. which blood tests matter, on the right cycle day, with reference and optimal ranges side by side
  2. what the evidence on hormone therapy shows, as of 2026
  3. why sleep, mood and weight can shift years before menopause
  4. what helps if hormones are not an option for you
  5. how to prepare for your doctor’s appointment

The author

Mona Poulev

Women’s health expert and nutritional scientist (MSc). For more than fifteen years she has worked with women and their hormones, and she has coached more than a thousand of them.

Guest contribution

A section for partners

Written by Jan Poulev. Meant to be passed on: read the book yourself, then hand this part to your partner when the time feels right.

This book is for information only and does not replace medical advice, diagnosis or treatment. Any change to medication belongs in the hands of your doctor.

Quick check · 1 minute

How strongly do you feel this right now?

Move each slider to where you are today. 0 means you don’t notice it at all. 10 means it is with you every day. I will then show you whether your thyroid, your hormones or your stress axis is in the foreground, and send you the matching starter guide.

Prefer the full version? Take the 16-question self-check

Let us take a closer look.

In a free clarity call, Mona looks at your symptoms and any test results you already have. You leave with a clear view of what makes sense as your next step.

20–30 minutes on Zoom · camera on · free of charge