Women's health · Science-based

The science of women's health, finally explained

Clear, verified information on menopause, hormones and nutrition, so you can take charge of your health.

Radiant, natural woman, a reference for women's health, VivanaFem
PubMed sources & clinical studies
Scientifically validated content
100% independent, no conflicts of interest
The Wednesday newsletter

One topic a week, sources included

One symptom explained, what the studies really show, and three concrete steps to try. Nothing else. Issues are currently written in French; an English edition is in the works, and subscribers will be the first to receive it.

  • One single email a week, never more
  • Every figure links to its PubMed reference
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See what an issue contains

Free when you subscribe Preparing for your appointment: the perimenopause logbook. 19 pages to print and fill in (currently in French).

What is your hormonal profile?

Interactive assessments based on medical studies

Complete Hormonal Profile Test

The flagship assessment in 12 questions: symptoms, sleep, weight and mood, for an overall hormonal profile with personalized advice.

5 min · 12 questions · Full assessment
Start →

Menopause Test

Identify your stage (perimenopause, menopause or postmenopause) and get advice suited to it.

5 min · Personalized score
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Hormonal Balance Test

Assess your hormonal balance and detect the warning signs to watch.

5 min · Personalized score
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Nutrition & Hormones Test

Spot potential deficiencies in the vitamins and minerals key to your hormonal balance.

5 min · Personalized score
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🌸 New · Learn by playing

The Vivana Journey

An interactive quiz game to master your hormonal health: 8 themed levels, badges to collect, tiers to climb and a community leaderboard. Every right answer teaches you something, all of it backed by science.

Start playing →

Our videos to understand your health

Clear explanations, with their medical sources cited. Videos are in French, with English subtitles available.

Menopause before 40: premature ovarian insufficiency

Before 40, periods that disappear or go haywire are not just "stress", and "you are too young for that" is not a diagnosis. The video explains what should trigger testing, the dosing rule that changed in 2024, and why the hormonal reasoning flips before 40. In French with English subtitles.

menopause 13 min · August 13, 2026 · 20 PubMed studies
Read the full article →

Migraines and menopause: why perimenopause is the worst time

Have your migraines become more frequent and less predictable over the past two or three years? The mechanism is counterintuitive: it is not the lack of estrogen that triggers the attack, it is the drop. In French with English subtitles.

menopause 13 min · August 10, 2026 · 14 PubMed studies

Skin and hair in menopause: the 30% collagen myth

"Women lose 30% of their collagen in the first 5 years of menopause": the figure is everywhere, and it appears in no original publication. The real data is about 1 to 2% per year, and the video walks through the honest hierarchy of what works. In French with English subtitles.

menopause 13 min · August 6, 2026 · 33 PubMed studies

Menopause and joint pain: what is true, what is false

Joint pain and stiffness are among the most common complaints of menopause, and among the most underestimated. What truly comes from the drop in estrogen, what comes from osteoarthritis, and what hormone therapy actually changes. In French with English subtitles.

menopause 12 min · August 2, 2026 · 15 PubMed studies

All our videos (19) →

Frequently asked questions

Short answers, grounded in the studies. To go further, our articles and videos.

At what age does perimenopause start?

Perimenopause usually begins between 40 and 45, sometimes earlier. It lasts on average 4 to 8 years before menopause (12 consecutive months without a period). First signs: irregular cycles, disturbed sleep, mood swings. Take the Menopause Test to identify your stage.

Why am I gaining weight in menopause despite eating healthily?

The drop in estrogen redistributes fat toward the abdomen, muscle mass decreases (metabolism slows down) and cortisol promotes abdominal storage. It is not a lack of willpower: it is hormonal, and validated strategies exist. Read our cortisol & weight guide.

Is brain fog in menopause normal?

Yes, it is a frequent, documented symptom: estrogen is fuel for the brain, and its decline temporarily affects memory and concentration. The phenomenon usually improves in postmenopause. Understanding brain fog.

Are phytoestrogens (soy, flax) effective against symptoms?

Clinical studies show a modest but real effect in some women, particularly on hot flashes. The effect varies with the gut microbiome. The complete phytoestrogen guide.

Is intermittent fasting suitable for women over 45?

The female body responds differently to energy deficit: overly aggressive fasting can stress the hormones (cortisol, thyroid). Studies suggest gentle windows (12 to 14 h) and a gradual approach. Watch the intermittent fasting video.

Is menopause hormone therapy (MHT) dangerous?

Recent data are more reassuring than its reputation: for most women under 60, within 10 years of menopause, the benefits often outweigh the risks. The decision is made with a doctor. What the studies say about hormone therapy.

Informational content: not a substitute for personalized medical advice.

The Wednesday newsletter

One symptom explained, what the studies really show, and three concrete steps. One single email a week. Issues are currently in French; subscribers will be the first to receive the English edition.

Free when you subscribe Preparing for your appointment: the perimenopause logbook. 19 pages to print and fill in, every figure sourced on PubMed (in French).