Why do women suffer from bad breath more than men? The unknown relationship between female hormones and oral health In the past, many people associated bad breath with men. However, the risk of bad breath in women has recently been attracting attention and is being featured in the media. In this article, we will explain the causes and countermeasures.
1. Hormonal balance affects oral health
A woman’s body experiences significant changes in hormone balance at each stage of life, such as puberty, pregnancy, and menopause.
Estrogen (the female hormone) in particular is closely related to the health of the gums and mucous membranes, and
fluctuations in its levels are known to increase the risk of oral inflammation.
During periods of significant hormonal fluctuation, such as before menstruation or during pregnancy, gums tend to swell,
making them more susceptible to gingivitis and periodontal disease.
These inflammations are one of the major causes of bad breath.
2. Decreased saliva makes odor worse
Fluctuations in female hormones also affect the amount of saliva secreted.
Saliva acts like a natural mouthwash, rinsing the mouth and preventing bacterial growth.
However, when estrogen levels decrease due to menopause, saliva production also tends to decrease, leading
to a dry mouth condition. This leads to the proliferation of bacteria,
creating a vicious cycle that worsens bad breath.
Saliva also has a “buffering capacity” that adjusts the pH level.
If this capacity weakens, the oral cavity tends to become more acidic,
creating an environment where periodontal disease bacteria and anaerobic bacteria can easily thrive.
3. Periodontal disease is also related to women’s overall health
Periodontal disease is not just an oral disease, but also affects the health of the entire body.
In recent years,
it has become clear that fluctuations in female hormones promote the proliferation of periodontal bacteria, and that the resulting inflammation travels through the bloodstream and has a negative effect on the entire body.
It is said that if periodontal disease worsens during pregnancy, the risk of premature birth and low birth weight increases, so
coordinated care between dentists and gynecological specialists is recommended.
4. Prevention through daily care
It is not possible to completely stop the hormonal fluctuations that are unique to women,
but it is possible to create an environment that does not allow bacteria to multiply through daily care.
・Gargle immediately after waking up in the morning (to wash away bacteria accumulated overnight)
・Use a tongue brush and mouthwash
・Regulate your oral flora with lactic acid bacteria and prebiotics
・Regular dental checkups
These small habits will help restore the balance of bacteria, which is the root cause of odor,
and not only improve bad breath but also contribute to overall health.


