Comprendre le rôle des œstrogènes pendant la périménopause est essentiel pour anticiper les bouleversements du corps. Durant cette transition, la fluctuation de ces hormones clés influence votre énergie et votre moral. Découvrez comment naviguer sereinement durant la périménopause en décryptant ces mécanismes biologiques et leurs solutions.

Les trois principaux types d'œstrogènes

We often talk about "estrogens" in general terms, but there are actually three main types, which have different roles and origins.

Estradiol (E2) is the main estrogen in women of childbearing age. It is produced by the ovarian follicles during the menstrual cycle and is the most biologically potent, with numerous effects on the body. Its decline during premenopause and sharp drop during menopause can cause many symptoms such as hot flashes, sleep disturbances, vaginal dryness, fatigue, and mood swings.

Estrone (E1) is mainly produced by adipose tissue and the adrenal glands. After menopause,estrone (E1) becomes the main form of estrogen in the body, but its hormonal activity is weaker than that of estradiol. It therefore only partially compensates for the decline in estradiol.

Estriol (E3) is a specific estrogen produced mainly during pregnancy by the placenta. Its estrogenic activity is weaker.

The role of estrogen in women

Estrogens are not simply "reproductive hormones"; they are true multitasking messengers that influence almost the entire female body. Produced mainly by the ovaries, they circulate in the blood and bind to receptors located in the brain, bones, heart, skin, and, of course, the reproductive system.

Estrogens, and in particularestradiol, play an essential role in many of the body's mechanisms, far beyond fertility.

• First, they help regulate the menstrual cycle by promoting the thickening of the endometrium in order to prepare the uterus for a possible pregnancy.
• They also contribute to bone health by slowing down bone tissue degradation and supporting the activity of cells responsible for bone formation (osteoblasts). This is one of the reasons why the risk of osteoporosis increases after menopause.
• Estrogens also play an important role in cardiovascular protection. They promote proper dilation of blood vessels, improve blood circulation, and help maintain a more favorable lipid profile (cholesterol levels).
• They also play a role inemotional balance by influencing the production and action of certain neurotransmitters such as serotonin and dopamine, which are involved in mood, motivation, and general well-being.
• Finally, estrogen contributes to healthy skin and mucous membranes by stimulating collagen production, promoting tissue hydration, and supporting skin elasticity.

How does estrogen change during perimenopause?

Contrary to popular belief, the decline in estrogen is not linear. Premenopause is characterized more by hormonal instability. It often resembles a roller coaster ride: the body, sensing that the ovaries are slowing down, sends increasingly strong signals (via the FSH hormone) to try to stimulate estrogen production.

It is therefore not uncommon to experience phases of hyperestrogenism (too much estrogen) alternating with phases of hypoestrogenism (not enough). It is this hormonal chaos that defines hormones during premenopause and explains why you may feel different from one cycle to the next. As you approach menopause, production will eventually decline permanently.

Symptoms of declining estrogen levels

When estrogen levels begin to drop significantly, the body sends out various warning signals. Every woman is unique, but some signs are unmistakable:

• Hot flashes and night sweats: a lack of estrogen disrupts the body's temperature regulation center.
• Mucosal dryness: this often manifests as vaginal or ocular dryness, as well as a loss of skin elasticity.
• Mood disorders: irritability, anxiety, or depressive episodes are common.
• Fatigue and sleep disorders: difficulty falling asleep or waking up early due to hormonal decline.
• Joint pain: Estrogen has an anti-inflammatory effect, so a decrease in estrogen levels can cause joint sensitivity.

Natural solutions to support estrogen

It is entirely possible to support your endocrine system through gentle methods and a healthy lifestyle.

1. L'alimentation : privilégiez les phyto-œstrogènes (soja bio, légumineuses) qui miment l'action des œstrogènes dans le corps de façon légère. Consommez des oméga-3 (petits poissons gras, huile de colza) pour soutenir le système nerveux.
2. Herbal medicine: certain plants are valuable allies. Red clover and sage help regulate hot flashes, whileblack cohosh acts on overall hormonal balance.
3. Stress management: The drop in estrogen can make the body more sensitive to stress and fluctuations in cortisol, the stress hormone. Practices such as yoga, meditation, or cardiac coherence can help to better regulate stress and support overall balance.
4. Exercise: Regular physical activity helps maintain bone density and improves hormone receptor sensitivity.

Quand faut-il envisager un traitement hormonal ?

Despite all the natural remedies available, some women's quality of life remains severely impacted. If symptoms (severe insomnia, depression, debilitating hot flashes) prevent you from leading a normal life, it's time to seek medical advice.

Le THM (Traitement Hormonal de la Ménopause), ou traitement substitutif, peut être envisagé. Aujourd'hui, les médecins privilégient souvent des hormones "bio-identiques" (dont la structure est identique à celle produite par le corps) par voie cutanée pour les œstrogènes et par voie vaginale ou orale (ovules) pour la progestérone.

The important thing is to discuss it with a healthcare professional (particularly a gynecologist) to assess the benefits and risks based on your medical history. There is no inevitability: perimenopause is a transition, not a disease, and there are solutions for every woman.