Perimenopause Assessment

Perimenopause & Cortisol Symptom Assessment

Understand how declining oestrogen and rising cortisol may be driving your symptoms — from sleep disruption and anxiety to weight gain and brain fog.

4 minutes
20 questions
Evidence-based
How does this assessment work?

During perimenopause, oestrogen levels fluctuate significantly. This removes oestrogen’s natural buffering effect on cortisol — the body’s primary stress hormone. The result is that the same level of stress can produce a much stronger and longer-lasting biological response, driving symptoms across multiple body systems.

This assessment evaluates 20 symptoms across 10 clinical categories — including sleep, energy, mood, gut health, intimacy and stress recovery. Each answer is scored from 0 to 3, producing a total between 0 and 60 that maps to one of four hormone profiles. The categories and scoring are based on Dr. Victoire’s clinical framework for the cortisol–oestrogen interaction in perimenopause. This is an educational tool, not a clinical diagnosis.

About this assessment

Medically reviewed by Dr. Victoire — Last updated March 2026
Dr. Victoire Kotur de Castelbajac, Consultant Gynaecologist
Dr. Victoire Kotur de Castelbajac
Consultant Gynaecologist · Perimenopause Specialist
Toulouse Purpan University Curie Institute, Paris — Ovarian Cancer Research MSc Biostatistics St Louis Hospital, Paris — Breast Diseases Centre International Menopause Society RCOG Associate Member Dispensaire Français — Volunteer Gynaecologist

Dr. Victoire Kotur de Castelbajac is a French-trained consultant gynaecologist with specialist expertise in perimenopause, menopause and functional medicine. This assessment is based on her clinical presentation on the relationship between cortisol, oestrogen and perimenopause, developed through her work with patients in London and her research into hormonal health. She consults primarily at Medical Chambers Kensington and at Harley Street Gynaecology, and offers consultations in both English and French.

Book Appointment

Medical Chambers Kensington · SW5

Languages: English · Français

Frequently Asked Questions

What is the link between cortisol and perimenopause?
During perimenopause, oestrogen fluctuates significantly, removing its buffering effect on the stress hormone cortisol. This means the same level of stress produces a stronger and longer biological response, contributing to fatigue, anxiety, sleep disruption and weight gain around the abdomen.
What are the signs of cortisol dysregulation in perimenopause?
Common signs include waking between 2 and 4am, afternoon energy crashes, anxiety without obvious cause, belly fat that will not shift, intense sugar cravings, brain fog, low libido, gut changes and difficulty recovering after stressful events.
Can perimenopause cause gut problems and food intolerances?
Yes. Oestrogen directly regulates the gut microbiome. Fluctuations reduce microbial diversity and increase intestinal permeability, which can cause bloating, irregularity and new food sensitivities.
Why has my libido dropped during perimenopause?
Elevated cortisol suppresses both oestrogen and testosterone — the hormones most responsible for sexual desire. Vaginal dryness and discomfort, also driven by falling oestrogen, can further affect intimacy. Both are clinically treatable.
Is this assessment a medical diagnosis?
No. This is an educational self-assessment tool designed to help you recognise patterns in your symptoms and understand how cortisol dysregulation may be contributing. It is not a substitute for clinical evaluation, blood tests or a formal diagnosis. Your results can be a useful starting point for a conversation with your doctor or specialist.
How does cortisol affect weight gain during perimenopause?
Chronically elevated cortisol promotes fat storage around the abdomen by increasing insulin resistance and stimulating appetite, particularly for sugar and refined carbohydrates. As oestrogen declines during perimenopause, its protective effect on body composition is lost, making cortisol-driven weight gain more pronounced. Addressing cortisol through lifestyle, nutrition and sometimes medical intervention can help.
Can lifestyle changes alone address perimenopause symptoms?
For women with mild symptoms, targeted lifestyle changes — including strength training, stress management, sleep hygiene, blood sugar regulation and anti-inflammatory nutrition — can make a significant difference. However, moderate to severe symptoms often benefit from medical support including hormone replacement therapy (HRT). A specialist can help determine the right combination for your individual profile.
Where can I see a perimenopause specialist in London?
Dr. Victoire Kotur de Castelbajac offers perimenopause and functional medicine consultations at Medical Chambers Kensington (10 Knaresborough Place, SW5) and Harley Street Gynaecology (25 Harley Street, W1G). Consultations are available in English and French.
When should I see a gynaecologist about perimenopause symptoms?
If your symptoms are affecting your sleep, work, mood, relationships or quality of life, it is worth seeking specialist advice. Many women find their symptoms dismissed or attributed to stress — a specialist consultation provides proper investigation and a personalised treatment plan.
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