Döderlein's flora refers to the part of the vaginal microbiota composed of protective lactobacilli. It maintains an acidic environment, prevents the proliferation of pathogenic bacteria, and preserves the balance of the vaginal flora .
Key takeaways:
- Döderlein's flora is composed of lactobacilli that protect the vaginal microbiota.
- An imbalance in the flora leads to fungal infections, vaginosis, and irritations.
- Probiotics for vaginal flora can help restore balance after an imbalance.
- Factors such as antibiotics, hormones, and intimate hygiene directly influence this ecosystem.
- Maintaining a healthy vaginal flora relies on gentle care, good hygiene and a suitable diet.
What exactly is Döderlein's flora?
Döderlein's flora refers to a portion of the vaginal flora composed primarily of lactobacilli. Discovered by Albert Döderlein, it plays a major protective role in maintaining vaginal balance and health.
The vaginal flora is a complex ecosystem, populated by billions of microorganisms. Among them, Döderlein bacilli occupy a central place: these are bacteria of the genus Lactobacillus , which shape the intimate balance.
Discovered at the end of the 19th century by gynecologist Albert Döderlein , this flora was quickly recognized as a cornerstone of vaginal health . Its origin is directly linked to the vaginal mucosa, which produces glycogen. Lactobacilli feed on this glycogen to maintain an acidic environment.
This acidic vaginal environment (pH around 3.5 to 4.5) limits the growth of pathogenic bacteria and yeasts such as Candida albicans . By producing lactic acid and other protective substances, lactobacilli support the vaginal ecosystem and reduce the risk of imbalance.
An abundant Döderlein flora acts as a true shield. It promotes the stability of the vaginal microbiota and contributes to a lasting balance, in constant interaction with female hormones and the local immune system.
What factors influence the flora of Döderlein?
Several factors influencing the vaginal flora can alter the balance of the vagina: excessive hygiene, stress, antibiotics, and hormonal fluctuations such as menopause. These changes sometimes promote dysbiosis and increase the risk of infection.
The vaginal flora (Döderlein's flora) reacts to the intimate environment. Certain behaviors, treatments, or life stages directly influence its balance. We will review the main factors to better understand their role in vaginal health.
Table – Factors influencing Döderlein's flora
| Postman | Effect on the vaginal flora |
|---|---|
| Excessive hygiene | pH imbalance, irritation of the mucous membrane |
| Stress | Decreased local immunity, risk of dysbiosis |
| Antibiotics | Partial destruction of protective lactobacilli |
| Hormonal variations (cycle, pregnancy, menopause) | Changes in vaginal glycogen, less abundant flora |
| Unbalanced diet | Reduction of nutrients useful to lactobacilli |
| Unprotected sex | Possible introduction of pathogenic bacteria |
Döderlein's flora during pregnancy
During pregnancy, the vaginal flora (Döderlein flora) becomes more abundant to protect the vagina. This natural adaptation reduces the risk of infection.
During pregnancy, estrogen increases glycogen secretion in the vaginal mucosa. This nourishes lactobacilli and promotes an abundant Döderlein flora , considered protective for the intimate health of pregnant women ( Inserm ).
Döderlein's flora at menopause
Menopause leads to a decrease in estrogen , which depletes the vaginal flora and promotes dryness.
After menopause, the hormonal decline reduces the amount of glycogen available in the vagina. Lactobacilli, receiving less nourishment, become less numerous. This change can promote dysbiosis and increase the risk of bacterial vaginosis or vaginal irritation.
After a course of antibiotics
Antibiotics weaken beneficial bacteria , including Döderlein's bacilli.
Antibiotic treatment can profoundly alter the vaginal flora. By eliminating certain pathogenic bacteria, it also affects the protective lactobacilli. This sometimes promotes an overgrowth of yeasts such as Candida albicans or opportunistic germs such as Gardnerella vaginalis .
The vaginal flora is therefore sensitive to a woman's habits, treatments, and major life stages. Understanding these factors helps us better identify situations where the vaginal ecosystem may be unbalanced.
What are the symptoms of an imbalance in the Döderleine flora?
When the vaginal flora (Döderlein flora) is absent or altered, signs such as vaginal dryness, unusual discharge, or odor may appear. Vaginal analysis provides a flora score to confirm the state of balance.
An imbalance in the vaginal microbiota occurs when lactobacilli are no longer functioning properly. Without them, the vaginal ecosystem becomes more vulnerable to pathogenic bacteria, which can lead to dysbiosis or vaginosis.
Common symptoms associated with an absence of Döderlein flora
An absent or reduced Döderlein flora often manifests as uncomfortable sensations. These signs vary from woman to woman, but some recur regularly.
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Persistent vaginal dryness
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Local irritations or itching
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Unusual, sometimes heavier, bleeding
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Unpleasant odors associated with vaginosis
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Increased susceptibility to vaginal infections
How can I tell if my Döderlein flora is unbalanced?
Symptoms of absent flora are not enough: a vaginal analysis can help establish an accurate flora score.
Gynecologists sometimes use vaginal analysis to assess the balance of the vaginal flora. The flora score is based on the presence or absence of lactobacilli and indicates whether the ecosystem is protective or weakened ( CDC – Bacterial Vaginosis Treatment Guidelines ).
Could the flora of Döderlein disappear completely?
Yes, in some cases such as menopause or after treatments, the flora can be greatly reduced.
A vaginal flora can be considered absent when no Döderlein bacilli are detected in a sample. This leads to symptoms of an absent flora : vaginal dryness, discomfort, and a risk of recurrent infections. This situation is most often observed after antibiotic treatment or in postmenopausal women.
How to treat and maintain a healthy vaginal flora?
A protective flora is based on two axes: treating an unbalanced flora with the help of intimate probiotics, then maintaining an abundant Döderlein flora through simple daily actions such as gentle hygiene, choosing underwear and a balanced diet.
How to rebalance an imbalanced vaginal flora with intimate probiotics?
A vaginal flora protocol often relies on measures that help restore the flora and support the role of lactobacilli. Intimate probiotics play a key role here by promoting the return of a protective flora.
The benefits of probiotics for intimate health include the ability to rebalance the vaginal flora and strengthen vaginal protection against pathogenic bacteria. According to several publications ( Frontiers – The role of probiotics in vaginal health ), strains such as Lactobacillus gasseri and L. crispatus are particularly studied.
These strains are available in various forms: oral capsules, vaginal capsules, or specific supplements. Side effects from intimate probiotics are generally mild (slight bloating, temporary discomfort) and disappear quickly.
Our expert solution
For those seeking a suitable product, our Intimate Flora Probiotics combines selected strains of lactobacillus studied to support the protective flora. It's a practical solution for restoring balance to the flora after an imbalance.
Discover Probiotics for Intimate FloraHow to maintain a healthy vaginal flora on a daily basis?
Simple habits help to maintain a balanced gut flora and limit the risk of an unbalanced gut flora.
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Cotton underwear : promotes the breathability of the vaginal mucosa and reduces excessive moisture.
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Gentle intimate hygiene : avoid harsh soaps that disrupt the pH and weaken the flora.
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Protected sexuality : limits the introduction of pathogenic bacteria into the vagina.
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A balanced diet : a diet rich in fiber and low in sugar promotes lactobacilli.
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Stress management : chronic stress influences the flora and can promote dysbiosis.
By combining a suitable vaginal flora protocol (such as probiotics) with simple daily habits, you support a healthy vaginal flora . These good practices strengthen vaginal protection and reduce the risk of an imbalanced flora.
FAQ – Döderlein Flora
What is the difference between vaginal flora and Döderlein's flora?
The vaginal flora encompasses the entire microbiota of the vagina; Döderlein's flora refers primarily to the protective lactobacilli.
The vaginal flora includes several types of bacteria. Among them, Döderlein bacilli form the protective core by producing lactic acid. Their role is central to maintaining an acidic environment, thus limiting the risk of dysbiosis.
Is it normal for the flora of Döderlein to vary during the cycle?
Yes, the flora changes with hormones and can be more abundant at certain times of the menstrual cycle.
During the menstrual cycle , estrogen fluctuations influence glycogen secretion in the vagina. This alters the microbiota and the amount of lactobacilli. In our opinion, it is normal for a woman to experience these fluctuations, without this indicating an imbalance.
Why is Döderlein's flora essential for intimate health?
It protects against pathogenic bacteria and plays a key role in the balance of the vaginal microbiota.
Lactobacilli act as a protective flora . They produce lactic acid and other antimicrobial substances that prevent the proliferation of germs. Maintaining them reduces the risk of vaginal infection and contributes to women's intimate health.
What is the difference between Döderlein's flora and intestinal flora?
These two microbiomes are distinct but share a role in protection and balance.
The gut microbiota comprises billions of microorganisms in the digestive tract, while the vaginal microbiota is specific to the vagina. The two ecosystems interact: an imbalance in the gut microbiota can influence the vaginal microbiota.
How long can we expect it to take to recover an abundant Döderlein flora?
The time frame varies depending on the woman and the factors involved, ranging from a few days to several weeks.
The time needed to rebalance the vaginal flora depends on the cause of the imbalance (antibiotics, menopause, stress). Some studies suggest that a probiotic approach can improve the flora score in 2 to 4 weeks , provided that good intimate hygiene is maintained and appropriate follow-up is provided.
This FAQ concludes our exploration of Döderlein's flora. If you'd like to delve deeper, please leave your questions in the comments.
Other sources:
- NIH – Beneficial bacteria prevent recurring bacterial vaginosis: https://www.nih.gov/news-events/nih-research-matters/beneficial-bacteria-prevent-recurring-bacterial-vaginosis
- Frontiers – The role of probiotics in vaginal health: https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2022.963868/full
