A recent study has identified a particular strain of oral bacteria that can lower antiviral immunity in the oral cavity, which could have significant implications for oral health and overall immunity. The study, published in the journal Science Advances, found that the bacteria, called Veillonella parvula, can impede the body’s immune response to certain viruses, including the flu.

The research team discovered that Veillonella secretes an enzyme that breaks down lactic acid, a key component of the body’s natural antiviral defense. This breakdown of lactic acid can inhibit the production of a type of immune cell called T cells, which are critical for fighting off viral infections.

The study’s findings suggest that maintaining a healthy balance of oral bacteria is crucial for maintaining overall immune health, as certain strains of bacteria can have a significant impact on the body’s ability to fight off infections. Additionally, the study highlights the importance of maintaining good oral hygiene practices, as poor oral hygiene can lead to an overgrowth of harmful bacteria in the mouth.

The study’s lead author, Dr. Robert Shields, notes that this research is particularly relevant in the context of the ongoing COVID-19 pandemic, as individuals with poor oral health may be at an increased risk of contracting and developing severe cases of the virus.

To prevent the growth of harmful bacteria in the mouth, experts recommend practicing good oral hygiene habits, such as brushing and flossing regularly, using mouthwash, and visiting the dentist regularly for cleanings and checkups. Additionally, a healthy diet that is low in sugar and high in fruits and vegetables can also help to promote a healthy balance of oral bacteria.

In conclusion, the identification of Veillonella parvula as a strain of bacteria that can lower antiviral immunity in the oral cavity has significant implications for overall health and immunity. Maintaining good oral hygiene practices and promoting a healthy balance of oral bacteria is essential for maintaining a strong immune system and fighting off infections, including viral illnesses like the flu and COVID-19.

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